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00:19
@MelanieShebel Try answering sth interesting. There's sometimes a bit of it ;) BTW try to improve as many things as you can in your edits.
sth interesting?
Will do on the editing front, just submitted a major edit/format on one.
@Mithoron
something ^?
Yeah, will do. I'm still at a really basic level of chemistry so it's hard. (Undergraduate.)
@MelanieShebel Well, if you were lucky answering one HNQ could give you that much rep
00:31
But they are usually dumb (Hot Network Questions)
Oh, haha, thanks. Will do!
 
3 hours later…
03:42
I finally got to 1k!!
that was like my goal for the year
also; just finished my last undergraduate lab ever!!
isolated bis(diphenylphosphino)propanenickel II
 
3 hours later…
06:26
@Hexacoordinate-C Nope, it isn't superfluous
@gannex \o/
@gannex Which question?
06:42
antioxidants
I ended up posting an answer
I'm actually doing a laypeople-oriented presentation about ROS chemistry next week, so it was useful for me to write that up
Please suggest me some good (advanced) chemistry book for high school .
@M.A.R. @gannex
I have no idea what chemistry they teach in highschool
In my highschool, we didn't learn shit
Fine
the teacher let me take a bunch of lab equipment though, 'cause our school was crap and we didn't use it anymore
what sort of chemistry are you studying @koolman?
06:58
Actually full chemistry i.e physical inorganic and organic
Specially of physical chemistry
wow I wish I'd learned all that in HS, especially the Pchem.
well, in my opinion, the best organic book is Clayden Warren Wothers and Greeves
Meissler is an okay inorganic book, but there is no one perfect inorganic book
I studied PChem from atkins
Ok thanks
there are some very good comprehensive general chemistry books that might be more what you're looking for though.
Is there any other for Pchem
it depends how 'advanced' you want
well no, what I'm talking about are gen chem books. They cover pchem implicitly 'cause it's part of every other part of chem, but they're not explicitly pchem books
07:03
Actually i am preparing for IIT if you know
About it
what's IIT?
A competetive exam
An Indian university entrance exam I reckon
Yeah
@gannex Well, if you want to ''go more advanced'', you should study a book for each major field rather than one general chem book.
07:06
WTH
Never seen image snakes before
@koolman I can't read this, really
This is the previous year iit paper
ok so this is some sort of indian exam?
@M.A.R. Open it
I did.
I can't read it.
07:08
It will open on imgur
Gimme the link to the imgur page
I recently found this big orange book in my library:
https://www.amazon.com/Chemistry-OpenStax/dp/1938168399

it's freely available online and it provides a very well balanced overview of all the general topics in chemistry, useful for someone preparing to go into university. Somehow I can imagine you do more advanced stuff at that level though in India
@gannex Yah. One other reason to hate India's education system
well it looks like they at least have to learn stuff
here in Canada I didn't learn anything 'til 3rd year university. And that's only 'cause I try to take initiative.
Canada!
07:09
western education is sub-par. We just poach the smart people from other countries for our overpriced schools
(well that's more the US actually)
I always thought of your Olympiads as playground.
Olympiads?
@gannex Canadian Chem Olympiads
@gannex It's much, much better than what's here or in India, trust me.
@M.A.R. Are they easy
@M.A.R. Why
07:11
> This sealed booklet is your Question Paper. Do not break the seal till you are told to do so.
It's not easy. IT'S NOT EASY
@koolman Because you're not learning things. You're just pumping them into your head so you let it free after IIT.
Real learning never happens anywhere per se.
Unless someone likes the topic and digs in stuff themselves.
Yeah
The educational systems around the world do little to help this.
But ours and India's make it worse by expecting you to know more and not learn at the same time.
But I'm just beating a dead horse here.
hmmm... I heard about Chem Olympiads from some people I worked with in Europe this summer.
I'd never heard of chem olympiads before that
these are highschool level chemistry competitions right? That sounds cool. I wish I'd known about it in highschool.
do you have a Pchem book recommendation for koolman?
Other than Atkins?
07:16
other than atkins.
It sucks that Atkins is the only common pchem text. It's hard to learn from that book.
Physical chem in high school is a sad mess.
my recommendation for the wide range of subject matters was Openstax: chemistry (the big orange book). I flipped through a copy the other day and I was impressed with the breadth and simplicity. I think it could be good for learning a wide range of introductory level chem subjects
If you want a book other than Atkins, you have to either find simpler but more comprehensive books or harder but non-comprehensive ones.
simpler more comprehensive would be neat
So I'd just study Atkins and ''clear my doubts'' online.
07:19
I am downloading it
it may be too beginner level for what you're looking for
@gannex hullo!
heya
good to see another third year undergrad here
good to see another getafix here
07:22
I guess. who knows what '3rd year undergrad' means. The more I learn about other provinces' systems, nevermind other countries, the more I see that it's totally different everywhere.
@M.A.R. There can only be one
@gannex fair enough. what uni do you go to?
MWAHHA I upvoted 6 of @Ortho's meta posts in less than a minute. He will now be caught as inbreeding a sock-puppet and will be self-suspended.
On the down side of things, my account might be deleted, but
my uni is very small so I will stay anonymous for now.
ironically, my anon is weak. Someone in one of my labs actually figured out who I was today because of one of my stackexchange questions!
@M.A.R. does the frequency matter? or is it the number of votes that count?
@getafix Both matter. Actually I doubt the script runs on meta.
07:26
@gannex Cool.
That was just an excuse to ping @Ortho needlessly.
The one above was too, guess what
lol
I should be doing my problem sets sigh..
@gannex isn't gannex the stuff they make raincoats out of? lol
it is
but I got the name from my runescape account
which was given to me by an anonymous stranger as a level 40
I only learned about the raincoat material recently.
Makes coats out of @gannex
to be worn by fine british gentlemen
07:30
haha
@gannex you should stay away from @M.A.R.
noted.
should've gone to sleep hours ago. night everybody.
(╯°□°)╯︵ ┻━┻
Night
g'night
peace
ecaep
 
1 hour later…
09:00
1
A: Can someone explain this visual proof of the sum of squares?

Kirthi RamanI don't need any votes for my answer, but for a different way to look at it, you can check http://www.maa.org/sites/default/files/Siu15722.pdf

You just love to hate math.SE.
 
1 hour later…
10:06
Could anybody help me tell this guy that this isn't a question?
0
Q: What is the source of the thermodynamic data used in some answers?

DMPMore specifically I read the answer to the question "Why does sodium produce predominantly sodium peroxide when burned in air?" but I cannot match the results using the data I have from CRC Handbook. The reported values for the lattice entalipes are very different. What is the source of such data...

I don't want to do it, that would just make me look biased.
The guy didn't read it clearly to begin with. I clearly said that all thermodynamic data was taken from my lecture notes.
@orthocresol Flag it so that the moderators can take a look!
Oh, ok.
welp, I have a looksy
Welcome to Chemistrty.se! Please leave the link to the question you wish to clarify. I assume that it is this question, which clearly states: "Also, this answer is basically me paraphrasing last year's lecture notes... All the thermodynamic data is taken from there." In principle it is better to leave a comment for clarification, but since you have not obtained that privilege I understand the predicament. For future reference please also consider rewriting what is contained in the screenshots so that it can be indexed by the search page. — Martin - マーチン ♦ 1 min ago
@orthocresol did you know you can make diagrams with the MathJax O.o
like that one:
10:24
@Martin-マーチン how? Does it use tikz?
haha lol.... nope.
$$\require{AMScd}
\begin{CD}
A @>a>> B\\
@VVbV @VVcV\\
C @>d>> D
\end{CD}$$
a little extension
@ortho That thing about flagging was a joke :D
 
1 hour later…
11:46
@Martin-マーチン nice!! Thanks for the tip :D
**Superoxides**
$$\require{AMScd}\begin{CD}
\color{blue}{\ce{M(s) + O2(g)}} @>{\Large\color{blue}{\Delta H_1}}>> \color{blue}{\ce{MO2(s)}} \\
@V{\Large\Delta H_\mathrm{f}(\ce{M+})}VV @AA{\Large\Delta H_\mathrm{L}(\ce{MO2})}A \\
\ce{M+(g) + e- + O2(g)} @>>{\Large\Delta H_\mathrm{f}(\ce{O2-})}> \ce{M+(g) + O2-(g)}
\end{CD}$$
oops, stray minus sign at the bottom right...
that's odd, it renders correctly in the answer, but in chat it doesn't
you should always leave a space between the chemical and the state, ie \ce{O2 (g)}
Ah, ok
depending on what tool you use to render MJ in chat, you might not use the most uptodate version
Hmm, as far as the rendering on main site goes, mhchem seems to output a space regardless of whether I type it or not.
12:05
well, the point is to terminate the compound with a space
 
1 hour later…
13:33
@orthocresol Hm, why was that changed in mhchem?
Our previous version of mhchem didn't use a space between the chemical formula and the state of aggregation.
The current documentation suggests that IUPAC recommends no space
@orthocresol Yes, IUPAC doesn't use a space in the Green Book.
MathJax/mhchem:
I wonder why.
Hmm.. gotta go for now.
@orthocresol o/
14:17
quick question: do reactions ever finish?
 
1 hour later…
15:20
is a strong acid strong because its conjugate base is more stable than that of a weaker acid?
yes
or should I say 'weak' acid
ok
thanks
how does this relate to the inductive effect?
15:38
I'm trying to read a [table full of pKa values for organic acids and bases,]( http://sites.chem.colostate.edu/diverdi/all_courses/CRC%20reference%20data/dissociation%20constants%20of%20organic%20acids%20and%20bases.pdf) but having trouble with the line

"Data for bases are presented as pKa values for the conjugate acid"
When it lists them like that, how do you know whether the compound listed is actually an acid or a base?
For example it says Methylamine has a pKa of 10.66 - does this mean it is a weak acid, and will donate a proton with a dissociation constant of 10^-10.66?

Or does it mean it is a weak base, and will take a proton with a constant of 10^-(14-10.66)
15:54
@JasonB Yes, that's a common problem with such tables. The table doesn't show which –H is responsible for the pKa. In principle, you only see that you have a protonated form at pH < pKa, and a deprotonated form at pH > pKa (like a titration curve). But the table doesn't show which form is which.
And that can be nasty for something like lysine.
!!img/Lysine
16:30
Does anyone happen to know where I can find an equation for a (generalised) reaction between an aldose and periodic acid? I can't seem to find it in any standard Org. Chem textbooks ._. [However Morrison and Boyd 7th Ed. goes on to say that something called "oxidative cleavage" takes place if there're two or more adjacent hydroxyl (on adjacent carbons) or carbonyl groups; however it does provide an equation :/ ]
!!img/periodic acid
 
1 hour later…
17:44
!!flip/table
(۶ૈ‡▼益▼)۶ʇɐqꞁǝ
(╯°ਊ°)╯︵ɾɐ
!!flip/@ortho
(づಥਊಥ)づ︵@oɹʇɥo
@Chemobot I love you X'D
@Martin-マーチン o.o
17:56
@M.A.R. o/
\o/
I haven't heard a peep outta you, where've you been? O.o
Nov 11 at 14:41, by M.A.R.
FYI, I will be AFK every Sunday to Tuesday. I can't promise I will be here any other weekday, but I'll try to be here every Wed, Thu, Fri and Sat morning.
I shouldn't even be here right now
BUT DAMN YOU O' SITE YOU'RE DISTRACTING
@M.A.R. But...I'm not from The System. ._.
@AaronAbraham We're all part of the Matrix
18:01
@M.A.R. Sure we are ;P I went for the blue pill...I wonder if that's relevant?
You're dead and you still don't know it
@M.A.R. _____________
o_o
!!flip/@M.A.R.
(づ๑ʖ๑)┛︵@W˙Ɐ˙ᴚ˙
@Chemobot Hey that looks cool
!!flip/@M.A.R.
18:04
(۶ૈ‡▼益▼)۶@W˙Ɐ˙ᴚ˙
!!flip/@M.A.R.
HEY
@M.A.R. Don't get too full of yourself -_-
!!flip/@M.A.R.
(づಥਊಥ)づ︵@W˙Ɐ˙ᴚ˙
18:15
@gannex You play Runescape?
 
2 hours later…
19:54
@AaronAbraham

I certainly used to play runescape
 
2 hours later…
22:01
Your last quote deserves a thousand upvotes. — Camilo Martin Mar 20 '12 at 4:07
Funny that he said that...
22:20
@orthocresol o/
22:36
hey
@orthocresol howizat going?
busy day, heh
went for a poster session
@Hexacoordinate-C o/
I don't understand exactly how KOH can take the H on the benzene
22:52
@Hexacoordinate-C It's acting normally but phenolate gets C-alkylated not on O as would be more obvious.
@Mithoron I see :)
23:10
I'd assume that in H2O the phenoxide oxygen is well-solvated, hence much less nucleophilic.
Tinkered with the idea of a Claisen rearrangement but I doubt it under those conditions

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