The Periodic Table

ringo

5:33 AM

@Brian I stole your answer format from your ethane post because I liked it so much

PhMgBr

8:13 AM

@Martin-マーチン Oh

Good thing I'm not a nitpick. Otherwise I would've trolled you for inconsistent spelling.

Chemobot

9:39 AM

10

Q: Are non-exothermic explosions possible?

Explosives like picric acid and trinitrotoluene are unstable due to the close packing of so many $\ce{-NO2}$ groups onto a benzene ring. These highly strained bonds require only a relatively small amount of energy to cause the molecule to rip itself apart, forming a lot of more stable gas molecul...

Hippalectryon

@Martin-マーチン Seems like the daily questions work after all

CowperKettle

10:04 AM

This seems like a misleading equation for hydrolysis of AlCl3

The final equation makes it seem as if the water will remain neutral

A girl asked a question on a Russian chem forum that interested me, so I re-asked it here:

0

Q: Can oxidation of ethanol by copper oxide (II) yield copper oxide (I) as one of the products?

We know that ethanol is oxidised by copper oxide (II) to an aldehyde. Copper is reduced from $\ce{Cu^2+}$ to $\ce{Cu}$. Can this reaction, with some specific condition, yield $\ce{CuO}$ instead? That will also be a reduction of copper, only partial.

oxidation-state alcohols

orthocresol

10:24 AM

@CowperKettle you are forming HCl, how is it still neutral?

CowperKettle

@orthocresol Indeed! I was already answered the same way in a Russian forum. My mistake.

Good afternoon, Ortho!

orthocresol

it's still morning here :)

CowperKettle

I see. (0:

CowperKettle

10:44 AM

Interesting answer:

9

A: Why is Aluminium Carbonate unstable?

Aluminium carbonate reacts easily with water/water vapour to form aluminium hydroxide as you can see on the wikipedia page. $$\ce{Al2(CO3)3 + 3 H2O → 2 Al(OH)3 + 3 CO2}$$ So, if you want to store aluminium carbonate, you have to make sure it is free from moisture. Why it is unstable: Smaller ...

I thought Al(CO3)3 first breaks into Al(3+) and 3CO3(-)

The answer says Al ions make the C-O bond unstable in the carbonate ions

Feeds meta.chemistry.se

12:16 PM

0

Q: Let's make an authoritative question on "Can I Predict the Outcome of Any Chemical Reaction"!

This site periodically attracts questions that essentially ask for a way to utilize the amassed synthetic knowledge and wisdom of the chemical profession without either 1) doing the hard work to get there, or (more commonly) 2) understanding that the question itself represents something akin to t...

discussion

orthocresol

12:55 PM

@CowperKettle carbonate has a -2 charge

CowperKettle

@orthocresol Indeed, thank you!

This breaks my head.

Nitrogen gives away 5 electrons. Shouldn't its charge be +5?

There's an 'external' electron in the system.

Hence the negative charge.

orthocresol

@CowperKettle oxidation state and formal charge are not the same thing

look at it this way.

if you broke all the N-O bonds, and assigned all the bond electrons to the more electronegative element, what would the charge on each atom be?

CowperKettle

+5 on nitrogen

It can't give more

orthocresol

and oxygen?

CowperKettle

two oxygens will have (-2), and one will have (-1)

orthocresol

1:08 PM

won't all three have -2

for the one with the double bond, the oxygen has 4 of its own, and gets 4 more from the double bond.

CowperKettle

It probably had one extra electron when the NO3 ion came unstuck from Na or K

So yes, it will have -2

orthocresol

can you draw a lewis dot-cross structure for NO3-?

ignore the charges for the time being

and draw all the electrons out

it should look something like this

I'll upload now (0:

1:13 PM

indeed absolutely

now, if you cleave all the bonds and assign all the electrons to the oxygen

CowperKettle

Yes, each oxygen will be -2, N will be +5, overall -1

orthocresol

mmhmm

That's what is called the oxidation state.

the oxidation state is the charge that would result if you hypothetically cleaved every bond and gave all the electrons to the more electronegative atom.

Now, if you cleave the bonds differently,

this time if you don't look at electronegativity, and you split the bond pairs exactly equally between the two atoms that are bonded,

CowperKettle

Hm

Yes, indeed.

In reality, N is sp2-hybridized. The cloud housing two electrons is the pi-cloud, perpendicular to the plane of bonding.

orthocresol

CowperKettle

In 'reality' that does not take MO into account, that is

orthocresol

1:20 PM

here N has 4 valence electrons, when it should have 5 to begin with

so it has a formal charge of +1

the two oxygens below have a formal charge of -1

and the oxygen on top has a formal charge of 0

CowperKettle

"Formal" meaning it is further from reality, probably

orthocresol

when charges are drawn on a diagram, it always refers to formal charge, not oxidation state.

well, it depends on the exact type of bond

often, formal charges are much closer to the actual charge

than oxidation states

CowperKettle

Ah

I took the original diagram from an anwer

3

A: How is the Nitrate Ion (NO3) formed?

An organiker would look at it this way. An inorganiker might look at it as literal N(+5) with two double-bonded oxygens. It does redox as N(+5). Coordination structures are varied,

orthocresol

regarding the MO theory of the nitrate anion, the description above is exactly correct, there are three sigma bonding MOs and one pi bonding MO

CowperKettle

No, no need, I haven't even started reading about MO. Thank you though. (0:

orthocresol

1:22 PM

haha no problem, since you asked about it i thought i would just tell you anyway

CowperKettle

I started reading, but stopped at the frightful ф letters.

CowperKettle

1:53 PM

The next problem in the textbook: there are formulas for 4 salts. Can you guess which of those will undergo hydrolysis in water?

Hell, no.

I have a special table which I look up each time, the solubility table.

Will Li2CO3 dissolve and undergo hydrolysis? How should I know.

H2CO3 is a weak acid

LiOH is a strong base

But how will I know if Li2CO3 dissolves?

ringo

Rote memorization

LOL

CowperKettle

(0:

ringo

All alkali metal salts are water soluble

CowperKettle

nods

LiOH is a strong base, the environment will become basic, because Li will not cling to OH- groups.

CO3- will sweep all the protons, as THE strong conjugate base of a weak acid.

ringo

Oh, it appears $\ce{Li2CO3}$ is only slightly soluble

(by some sources)

This is the website I used to learn the rules when I first started learning : chem.sc.edu/faculty/morgan/resources/solubility

CowperKettle

2:03 PM

Nice, thank you, Ringo.

ringo

Of course!

Brian

@ringo <grin>

I have a hard time not treating each of my answers like a little, casual journal article.

PhMgBr

2:44 PM

@Hippalectryon Shhh, I know you just got to fix it.

Hippalectryon

@PhMgBr I didn't do anything ._.

PhMgBr

Also are the exams over? There are 24,635 command-requests pending.

Hippalectryon

@PhMgBr The written part is over, yeah

PhMgBr

!!flip/oral exams

Chemobot

(∿°○°)∿oɹɐꞁ ǝxɐɯs

Hippalectryon

3:04 PM

@PhMgBr Orals are in a month or so... but to be able to do the oral exams you need to have been good enough at the written ones

PhMgBr

WTF is this system? I would never want to waste a whole season writing exams.

CowperKettle

word of the day: cyclopropanation

Rhymes with "Happy Nation"

but introduces ring strain

\o, Muhammad!

PhMgBr

\o

*taking exams

Hippalectryon

@PhMgBr You don't have to

PhMgBr

So you're taking the exams, because?

Hippalectryon

3:18 PM

@PhMgBr Here's roughly how it works : the schools people want to get in are roughly divided into 5 groups. For each group, there's a first a written exam in which a few thousand people apply. The written part is then graded, and the best ... hundred are selected for the oral exams. Finally the best ... of those who went to the oral exams are accepted.

I went to three groups (the three first), which is a bit more than two weeks straight of written exams

PhMgBr

So it's like a billion Konkurs.

It's better than one single exam for sure.

Hippalectryon

9M113 Konkurs

The 9M113 Konkurs (Russian: 9М113 «Конкурс»; cognate of French: Concours; English: "Contest") is a SACLOS wire-guided anti-tank missile of the Soviet Union. "9M113" is the GRAU designation of the missile. Its NATO reporting name is AT-5 Spandrel. == Development == The 9M113 Konkurs was developed by the Tula Machinery Design Bureau (Tula KBP). Development began with the aim of producing the next generation of SACLOS anti-tank missiles, for use in both the man-portable role and the tank destroyer role. The 9M113 Konkurs was developed alongside the 9M111; the missiles use similar technology, differing...

Wikipedia doesn't help ._.

PhMgBr

Facepalm

Konkur is our university entrance exam.

Hippalectryon

@PhMgBr The groups don't give access to the same schools, and they're more or less ranked by prestige (and difficulty) decreasing

That way people of widely different levels can still get appropriate exams

PhMgBr

It's like our high school and secondary school entrance exams.

Except, you're going to a university right?

Hippalectryon

3:22 PM

en.wikipedia.org/wiki/… I believe it's two years after the end of high school

In France people finish 'mandatory' school near 18 years old. Then then can take a 2 year poep school, then pass the exams

(the end of mandatory school is actually three years earlier, but few people stop here)

user116211

@PhMgBr: o/

user116211

Did I miss some important discussions ?

user116211

::checking::

PhMgBr

@MAFIA36790 \o

@MAFIA36790 Nah

user116211

Okay, so we are deciding at h bar to have chat sessions inviting guests who are either not involved with SE or not familiar with chat... it would be great really ;P

user116211

3:30 PM

Though the idea is just in thinking stage....

PhMgBr

@MAFIA36790 You'd be disappointed to see how many of those people don't show up.

Been there, done that.

user116211

o.O

PhMgBr

3:47 PM

O.o

user116211

4:00 PM

Welcome back here too! @ManishEarth

Jan

Hello world.

@PhMgBr The MATT was quoted again =D

Hippalectryon

@PhMgBr Btw I'm in the process of translating one of the chemistry exams in English for the lulz (one bit at a time, it's 21 pages long), I'll post it here when I'm done if you want

CowperKettle

5:08 PM

I wonder if cyclopropane's MO diagram will be different thanks to the ring strain - i.e. do MO diagrams (I can't read them) reflect such factors as ring strain.

Hippalectryon

You don't really see the strain in the agencement of the orbitals themselves, but you'd most likely see it in how high their energy is

PhMgBr

5:26 PM

@Jan \o/

@Hippalectryon Sure

We usually transliterate Persian famous songs to English. It becomes super funny.

So I know what you mean.

Puzzling looks like a bathroom with the new design.

user116211

@PhMgBr The WORST design ever in SE :(

PhMgBr

Nah, it looks good enough.

user116211

@PhMgBr I liked the logo but not the background.

PhMgBr

Though we got Kurtis to design Chem's, and honestly I haven't seen any designs as good as Chem's.

user116211

@PhMgBr I liked Worldbuilding's too.

PhMgBr

5:35 PM

Yeah that design was also nice.

Jan

@PhMgBr Puzzling looks like half a workplace. Or at least it did to me at first.

Loong

@PhMgBr looks like an Ishihara test

PhMgBr

@Jan Well, it does have a bit of graffiti and doodling all over it.

Jan

@PhMgBr I especially meant the logo. It took me two looks to realise that it wasn't a workplace question …

PhMgBr

3

Q: Community Site Design Ideas — Input Needed!

My name is Joshua, and I'm a Senior Product Designer at Stack Overflow. And, congrats, I will be working on your community's site design. Huzzah! Okay now for the questions. As I begin the design, I'd love to hear some thoughts from you on how I can best represent this community. What are...

discussion featured design

Emacs's's's is next.

's's

@Jan Oh hell, and it's not even you!

I feel so important right now.

Jan

5:41 PM

Hehe, yeah, I was about to answer that question with a link to MATT, when I realised Wrzl already had ;)

Loong

like this clone

Jan

To people who know how to read electrostatic potential (or who just know the answer anyway):

PhMgBr

@Loong Actually he asked me in chat and I said he can use it.

Jan

On which side is the negative charge as per the third (electrostatic potential) depiction of CN-?

PhMgBr

On the good side of things.

I still don't understand the MO description of CN-.

Jan

5:53 PM

It's like carbon monoxide only with a different atom ;)

PhMgBr

Yeah I know.

Maybe I know it but I think I don't.

So sp-mixing is weaker in N and carbon gets to eat more chocolate.

3

Or something like that.

So what is the difference between oxidation number and formal charge ? — koolman 28 mins ago

This is starting to get annoying.

@MAF ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

CowperKettle

6:19 PM

Can I obtain nitric acid by reacting KNO3 + HCl?

HCl is stronger, it will drive NO3 out of the salt, voila.

orthocresol

@Jan don't quote me on it, but it looks as if both red parts are "negative charge density"

Jan

@orthocresol So we cannot see a more negative end of the molecule? =C

orthocresol

@Jan I can't, at least

Jan

@CowperKettle Hey, I answered that today ;)

@orthocresol Damnit. And you're not sure which side of the molecule has an actual negative charge, are you?

CowperKettle

@Jan Thank you, I'll take a look!

orthocresol

6:22 PM

@Jan I'm not sure.

Jan

Hmm, just found a paper.

> The positive sign means that the negative end of the dipole moment is at the carbon site.

So carbon is delta negative, nitrogen is delta positive, right?

orthocresol

What positive sign?

Jan

Of the dipole moment.

As in it is 0.6333 D.

orthocresol

No idea actually

!!doi/10.1002/jcc.540110304

Chemobot

Could not find the requested DOI : 10.1002/jcc.540110304

orthocresol

6:30 PM

!!flip/chemobot

Chemobot

( つ•̀ω•́)つɔɥǝɯoqoʇ

Jan

Yeah, same result. Goodbye CN-, let's go looking for another possible example of formal charge =/= actual charge *sighs*

orthocresol

it's very close to -0.5 each, it seems

oh haha

that's difficult... if CN- doesn't work idk what will

!!greet/NotNicolaou

Chemobot

Welcome to The Periodic Table NotNicolaou! Here are our chat guidelines and it's recommended that you read them. If you want to turn Mathjax on, follow the instructions in this answer. Happy chatting!

Jan

I'll just have to take BF3 then. No way that there is greater electron density on boron (despite that we cannot see it, because the dipole moment cancels out to zero).

CowperKettle

6:34 PM

@Jan Quite interesting. A weaker acid will substitute a stronger if the latter goes away as a gas.

ringo

I need help resizing an image

I try cutting it to half the size and doubling the resolution but it looks awful after I upload it

suggestions anyone?

Hippalectryon

@ringo What program are you using ? Just post the original image I'll do what I can

ringo

Uhh... preview for mac lol

Hippalectryon

@CowperKettle Well yeah, it's an equilibrum displacemen

orthocresol

20

A: Hidden points of editing you probably didn't know

Sizing for images If you post to Imgur (the default host for StackExchange) you can use URL suffix codes to change the size of the image in your answer or question: $$ \small \begin{array}{clcc} \hline \text{Thumbnail Suffix} & \text{Thumbnail Name} & \text{Thumbnail Size} & \text{Keeps Image P...

Hippalectryon

6:37 PM

@ringo post a link to the image

ringo

user116211

@PhMgBr What is the difference between O.N and formal charge????

user116211

IT"S URGENT!!

user116211

;_;

ringo

@orthocresol thanks a bunch

Jan

6:39 PM

Oh god I hate the person who keeps setting the injection volume of our HPLC-MS to .5 µl >___<*****

Hippalectryon

@ringo Tell me if ortho's solution doesn't work :-)

ringo

I think it did!

Thanks anyway!!!

user116211

okay, bye guys o/

Hippalectryon

@MAFIA36790 \o

ringo

@Jan I (think I) addressed your point

Jan

6:50 PM

I'm still confused @ringo.

ringo

Darn

Jan

You write a nice list starting at methanol, going to tert-butanol and then have water. With decreasing acidity. But in the sentence you say the acidity increases with larger alkyl residue or something. There must be a catch I missed?

ringo

Yes, I think I was mistaken in my reasoning

Thanks for pointing it out

@Jan thanks a lot

I think its explained now

Jan

7:07 PM

@ringo There we go, now have my upvote =)

ringo

I think you've revealed the fact that I don't know anything and all my answers are essentially research that I've done

But thank you very much. You didn't have to help me and you did

CowperKettle

Wolfram: It looks like "wolf-cream" (from rahm "cream"), but the second element might be Middle High German ram (German Rahm) "dirty mark, soot;" if so, perhaps "so called in sign of contempt because it was regarded of lesser value than tin and caused a considerable loss of tin during the smelting process in the furnace" [Klein]. Or perhaps the word is originally a personal name, "wolf-raven."

It's still вольфрам in Russian

Tungsten in English.

Goodnight!

ringo

Goodnight!

Jan

Goodnight @Cow. Note that Wolfram is a personal name.

@ringo Haha, there's a fair bit of answers that I had to research, too. But you know what they say, if you try to teach somebody else, you remember 95 % of what you learnt. If you just read it, you remember 10 %.

A teacher kept repeating that at about every third morning assembly when I was on exchange in Australia.

Somebody forgot some chocolate in the social room. I just made sure that it doesn't fall into the wrong hands O:-)

ringo

7:22 PM

I think that's why I like Chem.SE so much

It makes me learn new things

And you guys of course

@Jan how kind of you !

Jan

@ringo (づ｡◕‿‿◕｡)づ

Hippalectryon

7:34 PM

@PhMgBr I'm nearly done

Jan

8:21 PM

Good night peoples o/

Hippalectryon

\o

Shadock

9:01 PM

Hello

Adding Water to Acid; Finally A Reaction!

►

I like this kind of people who makes experiments rather than says it is very dangerous to put water in acid

What do you think of that? Why do we all learn to not do it at school?

Hippalectryon

Well, we learn it for valid reasons though. You can make experiments and say it's dangerous

Shadock

31

A: Why first water and then acid?

This is mostly the case for sulfuric acid. Commercially available sulfuric acid is dense (~1.8 g/ml) and when water is added, it may not mix. In this case a layer of hot weak acid solution is formed, which boils and sprays around. When acid is poured into water, it flows down the flask and mixes ...

The answer given their does not match with the experiments shown in the video

I have also ever have done it (it was a mistake) but nothing happen

Hippalectryon

@Shadock In what acid exactly ?

Shadock

In concentrated sulfuric acid

Hippalectryon

Also, it doesn't necessarily spray everywhere. But there's a non negligible risk, and it can have very bad consequences

Shadock

9:10 PM

Well, I'm not saying that it is not a good procedure, I'm just saying that when we learn it, it looks to happen everytime when anyone does it, which is not the cas.

case

I've ever used the Kjeldahl method and I remember that at a moment we were obliged to poor water in concentrated sulfuric acid. And all goes very well, it just was very hot

And when i'm saying "it looks to happen everytime" this what i'm thinking when i read the answer of the question.

Hippalectryon

@Shadock Well I haven't ever had acid splashing at me though... but I haven't tried pouring lots of water in acid either.

When you're monitoring "unexperienced" people, who knows what they might attempt

@Shadock In the video, you do see acid splashing a little on the surface for instance.

Shadock

10:27 PM

Nobody knows and as I said before I'm not saying that is not a good piece of advise. Just that it is not as dangerous as we learn it

And yes I saw there were some little slashing

Hippalectryon

@Shadock Well where I am studying (France) we're just told not to do it because it could be dangerous, but it's not stressed as a BIG risk either.

Shadock

I'm french haha

I remember when I learnt it in sophomore we were manipulating ethanoïc acid lol

Well nevermind it was just to know what other people think about that :)

Hippalectryon

:-)

Shadock

But you're french or you just study here?

Hippalectryon

I'm French, currently in Prepa. Had my exams last two weeks

Shadock

10:36 PM

That's weird to speak english with a other frenchman lol

or woman idk ^^

Hippalectryon

Si bizarre que ça ? :P

Shadock

Disons que si je peux parler français ça m'arrange, mais je ne sais pas si c'est permis de le faire. Après ils ne vont rien comprendre ^^

Du coup c'est déjà les concours, pourtant je les ai passé l'année dernière mais je n'avais pas capté que c'était le moment. J'espère que ça c'est bien passé pour toi !

Hippalectryon

@Shadock Je suis en 5/2 :P et oui ça c'est plutôt bien passé... à la chimie près, quelle ironie haha

Tu es ou cette année du coup ?

Shadock

Ah dommage (pour la chimie) et la 5/2 j'ai connu ça aussi mais pour des raisons médicales ^^

J'ai connu les changements de programmes en prépa et c'était fun lol

Je suis à CPE Lyon et parallèlement je fais la L3 de physique

Je pensais pas avoir autant de travail en école d'ingénieur et je pense que j'aurai pas dû parce que c'est vraiment chaud.

Hippalectryon

Ah dommage je ne connais personne à CPE Lyon :(

ringo

10:42 PM

Reading french is like a fun puzzle when you know spanish

Hippalectryon

@ringo :P

Shadock

Maintenant tu "connais" quelqu'un

ringo

a really, really confusing puzzle

Shadock

Podemos hablar el espanol

:P

ringo

si? :)

Shadock

10:43 PM

Pero no le hablo haha

Un poquito

ringo

no quiero interrumpir

Shadock

All is Ok :)

Du coup Hip au minimum tu vises quoi? ENS Cachan?

:P

Hippalectryon

@Shadock ~~ je veux une ENS ~~ :D

Loong

room topic changed to Le tableau périodique des éléments: Haikus are awesome / Chemistry's even better / So pull up a chair [blowing-the-lab-up] [german-stuff] [hullo] [love-you-all] [martin] [table-flipping] [tre] [welcome]

Shadock

J'ai réussi Centrale Lyon mais je n'y suis pas allé au grand damne de mes professeurs :D

J'ai ni*** le système :P

ringo

10:46 PM

@Loong Hey loong, would you agree: nucleophilicity=Lewis basicity?

Shadock

I'd like to agree but it may depends

Hippalectryon

@Shadock Tu ne voulais vraiment pas centrale lyon ?

Shadock

Sinon j'y serai depuis un an haha

C'est juste que moi je veux faire du génie des procédés et je voulais quand même garder une voie générale au cas ou je changerai d'avis

Loong

@ringo ok, both have a lone pair that can be donated

Shadock

Et franchement si tu veux faire de la chimie je pense pas que Centrale soit la meilleur école pour ca

Hippalectryon

10:49 PM

@Shadock Oui c'est vrai. C'est plus géné que les mines mais quand même.

Après il y a aussi l'ESPCI non ? Mais là c'est plus dur en terme d'admission (je ne m'y connais pas trop, je veux juste une ENS moi :D )

Shadock

Franchement je ne regrette pas pour le moment :)

Ils font surtout de la chimie orga ces gens là

Tout ce que je déteste

Hippalectryon

Haha moi c'est l'inverse :P je trouve la géné de prépa vraiment inintéressante

Shadock

La quoi? ^^

Hippalectryon

La chimie géné. Pas l'orga quoi. Les diagrammes E-pH, I-E, l'oxydoréduction etc

C'est juste plein de calculs pour des résultats sans grand intérêt. Au moins en orga c'est comme des legos :D

Shadock

@Loong can compounds such as N,N-Diisopropylethylamine be consider as lewis base?

Hippalectryon

10:55 PM

@Shadock Comme le LDA non ?

Shadock

Un tiers de ce qu'on fait à CPE c'est de l'orga et il y un master chimie organique, moi je trouve important de quand même en faire après l'orga c'est pas super dur mais ca ne m'interesse pas ^^

Because N,N-Diisopropylethylamine is not really nucleophilic

Loong

@Shadock yes, nucleophiles are Lewis bases, but not all Lewis bases can act as nucleophile.

Shadock

@Loong I'm asking the question because I always have troubles but for me to have a lone pair of electrons does not mean you necessary are a nucleophile.

Hum

Well but it depends on the steric effects too right?

Loong

@Shadock yes, non-nucleophilic Lewis bases are usually bulky.

ringo

@Loong do you have an example of a Lewis base that isn't a nucleophile

Shadock

11:00 PM

OK thanks :)

so like t-butoxide?

I gave one

huh

So LDA must be too

Lithium diisopropyl amidure

Loong

@ringo DBU

ringo

11:02 PM

I see, thank you guys

Shadock

LiTMP i guess too

Loong

Base non nucléophile

Une base non nucléophile est une base organique dont la nucléophilie est faible relativement aux bases le plus souvent employées. Elles sont utilisées pour obtenir une déprotonation dans les cas où l'introduction d'un composé nucléophile provoquerait des réactions secondaires non souhaitées. La caractéristique de ces bases est l'encombrement stérique autour du centre basique qui empêche l'approche d'un électrophile bien que les effets électroniques existent. == Bases non nucléophiles courantes == === Bases aminées === Plusieurs amines et hétérocycles azotés sont utilisés comme composés modérément...

Shadock

This is one of the reason for what I don't really organic chemistry ^^

Hippalectryon

@Shadock I think you le word :-)

Shadock

J'ai pas compris

Ah oui j'ai oublié un mot

Hippalectryon

11:03 PM

:-D

Shadock

*like

ringo

But those are Brønsted-Lowry bases, right?

Shadock

No

ringo

Lewis basicity would be measured by how well a species can donate its electron pair

which is just like nucleophilicity

Shadock

Bronsted base is able to catch a protons this is the definition

ringo

11:08 PM

right

Shadock

A lewis base has a lone pair

Lewis theory is more general

And you can keep going on with the HSAB theory

But HSAB is quite more hard. I don't know what your level in chemistry but I guess if you are able to make exercises using Lewis and Bronsted theory it is quite good. HSAB is really more general and harder to remember or to use sometimes you may have troubles.

If you want more details the wikipedia page is quite good en.wikipedia.org/wiki/HSAB_theory

ringo

Merci

:)

Shadock

Encore un français hey

lol

How should I remove it?

Each time i refresh it comes back

ringo

The wikipedia page in French?

Hippalectryon

Click "dismiss" ?

Shadock

11:20 PM

I clicked on dismiss three times yet

Hippalectryon

That's a weird bug. Block it with adblock (or whatever adblocker you have)

ringo

Or try restarting the browser perhaps

Shadock

I'll try

Hippalectryon

@Shadock Bon il est 1h30 je dois dormir ._. j'ai un TIPE à faire demain haha

Shadock

11:35 PM

Ah le TIPE

Quelle merde ce truc

Bonne nuit et bon TIPE !

Hippalectryon

Je la fais "à la 5/2" comme on l'appelle avec d'autres amis... aka on le commence et on le finit entre les écrits et les oraux ;-)

Shadock

aka?

Je ne parle que le pure français jeune Padawane

nhinkle

11:56 PM

When did the chemistry room become french?

Loong

room topic changed to The Periodic Table: Haikus are awesome / Chemistry's even better / So pull up a chair [blowing-the-lab-up] [german-stuff] [hullo] [love-you-all] [martin] [table-flipping] [tre] [welcome]

ringo

@nhinkle Since la révolution

Shadock

Are [blowing-the-lab-up] [german-stuff] [hullo] [love-you-all] [martin] [table-flipping] [tre] [welcome] links?

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