JEE Chemistry Club

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Anonymous

02:36

@paracetamol Hmm, learning how to kill people.. I mean cure, cure people..

Anonymous

.. can be hectic.

Dante

@IceInkberry I have few doubts, in organic chemistry.

Are you free?

Anonymous

I am for a while, but I may not be able to help you. I have forgotten what I have learnt.

Dante

Let's give it a try.

Anonymous

Yeah, say.

Dante

02:41

Alkyl group is -I as well as -R

Then shouldn't the substitution occur at ortho position?

Where -I effect is also strong

Anonymous

@Dante Alkyl group is +I

Anonymous

And it is a weakly +M

Anonymous

The substituent is very big, and it will choose a place which has least steric hindrance.

Dante

I see. Another one,

Anonymous

Alkyl groups are very weak activating groups.

Avnish Kabaj

02:44

Shure you didn't mean +H

Dante

Avnish Kabaj

Anonymous

What is +H

Avnish Kabaj

Hyperconjugation

Anonymous

I never used +H for hyperconjugation.

Anonymous

02:46

Whatever, steric hindrance is the play here.

Avnish Kabaj

+m kon kar raha hai

Dante

I didn't even understand what they meant in the question above. How can the carbon get a negative charge?

Anonymous

@AvnishKabaj Koi Nahi. Non existent.

Anonymous

What is -R? -M?

Anonymous

So, I said weakly +M.

Avnish Kabaj

02:48

Uhh ok

Anonymous

@Dante It will be positive.

Avnish Kabaj

@Dante me neither

Anonymous

Just imagine Electrophiles attacking benzene.

Avnish Kabaj

Their solution seems correct

Anonymous

I don't understand their solution.

Anonymous

02:50

If you attack Electrophiles to benzene, it will be (D) because the electrophiles won't be on the carbon with double bond or with a + charge.

Anonymous

The error here is that the charge in (D) will be + and not -

Dante

But the question is from KVPY exam

And solution by resonance

Are you sure it's an error?

JavaScriptCoder

Is something wrong with my math here?

Question is to calc the enthalpy of reaction from HCl and NH4OH from the top two equations

I'm apparently getting -2.14 when exper. val is -1.21

@AvnishKabaj

Anonymous

03:25

@Dante Yes, see the solution.

Anonymous

There must be a typing error.

Dante

Hmm

Thank you

Do you have any idea regarding how can quickly revise all the stuff that I've studied for KVPY?

I seem to have forgotten everything :/

Jasmine

@IceInkberry @Abcd from where will you study practical organic chemistry from

I am not sure if it is class 11 chapter organic chemistry- some basic principle and techniques

Dante

03:42

Why does elimination not take place in this case even though they've used tertiary alcohol and why have they called it an exception?

Abcd

04:00

@Jasmine sir gave us a very nice sheet to study it from

Anonymous

04:22

@Jasmine We have Allen module.

Anonymous

@Dante I have forgotten things too. But, if you have kept revising all way long it shouldn't be that difficult.

Anonymous

@Jasmine POC is in fiitjee's modules too. For me, it is in/with biomolecules/polymers chapter module.

Dante

@IceInkberry I didn't, Damn.

Anonymous

@Dante Oh well then just revise the formulae for Physics/chemistry and techniques for maths. You could do well with the formulae.

Dante

Hmm

Anonymous

04:29

Depends on your aim too, if you are aiming for high marks.. then well you should have revised and remembered all the chemistry.

Dante

IS the cutoff for KVPY shorter than JEE mains?

Anonymous

But, if you are looking to just clear it, formulae will do.

Dante

Round 1 cutoff.

Anonymous

Including biology students,

Anonymous

@Dante It's around 53/100 for (going to) second stage.

Dante

04:31

Oh, I see, that's gonna be difficult

Avnish Kabaj

@JavaScriptCoder o/

Long time

Dante

Do my round 1 marks effect placement in the college? Or will be based completely on the 2nd round?

Anonymous

@Dante The ranklist is inclusive of round 1 marks.

Dante

Hmmm. Thanks

Anonymous

The second round is just interview.

Dante

04:33

I see

Avnish Kabaj

@JavaScriptCoder looks right to me

What are a&b tho

JavaScriptCoder

04:47

@AvnishKabaj variables

I was talking to a friend abt Hess’s law

Jasmine

@IceInkberry ok

Avnish Kabaj

I see

JavaScriptCoder

My guess is they had experimental errors, since their classmates apparently got different things

Avnish Kabaj

Should be a - b imho

That won't change the numerical value

JavaScriptCoder

Must have been doing too many imaginaries

a+bi, -a+bi and things like that

Anyways, gotta sleep

Bio exam tomorrow, and I’m trash at bio

12 hours later…

paracetamol

17:05

@IceInkberry "Hectic" is putting it mildly ._.

Ended up skipping breakfast the other day (well, almost everyday). We were assigned to the emergency med. dept. (supposed to be a quick tour). A new patient was brought in with a cut wrist (courtesy- broken glass bottle), and the doc on duty dragged me with him to deal with it... I passed out next to the bed >_<

Then they had me treated at the emergency med. dept. My classmates found that hugely ironic ._.

Anonymous

@paracetamol I find that quite funny :P

Anonymous

And surely ironic. Life of med students.

Anonymous

And kids that's why you should eat your breakfast.

Anonymous

17:21

Imagine a faceless(?) person (paracetamol) who just passed out. You don't seem the passing out type xD

paracetamol

@IceInkberry I'm not ._.