revising GOC

1.)order of heat of hydrogenation: a)1-hexene
b)2-hexene c)3-hexene d)1-cyclo-hexene 2.)order in which they wil ract with H+:

21 Answers

1
Avinav Prakash ·

i SOMWAY FEEL ANS GIVEN IN THE BOOK R NOT RITE THATS WHY VE PUT UP THE THREAD.....HOWEVER..I WILL GET IT CHECKED IN FEW HOURS
@ASISH:==UR ANS FOR 1 SEEMS RITE.....EXPLAIN WHY? BUT ANS 4 Q2..NOT RITE

@GOVIND==EXPLAIN ????

1
Avinav Prakash ·

@ ASISH=EDITED...THANX

PLZ EXPLAIN TO ME WHY ...IV>I..MY DBT LL B CLEARD

106
Asish Mahapatra ·

avinav i have a doubt.....

waht is the difference between I and III in Q2 ???

1
Avinav Prakash ·

any1/avik..plz exp the oder 4 Q2>for II and IV

13
Avik ·

Fr 1) See the relative stability w.r.t the no. of hyperconjugative Hydrogens present. So, tht way (b)-has 5 thus being the stablest & having the lowest heat of hydrogenation, then goes (c).

Cyclo hexane if formed wud come to stabler boat/chair conformation, so its heat of hydro. shud be greater than tht of c.

(a) ki will be the highest as the =bond stabilisation ke liye only 2 hydrogens available hain.
So, i think the answer given is correct.

Kisi ne kuch aur logic lagayaa ho toh bataa dena.

2) Seems 2b wrong.

1
Avinav Prakash ·

CAN ANY1 EXP==REASON FOR THE ANS GIVEN

11
swaraj jena ·

in question 2 how I>IV
can anybody explain it????????

1
Avinav Prakash ·

1.a>d>c>b
2. I> IV> II> III.
NOW ..EXPLAIN UR ANS...

FOR 2....I AM DBTFUL WHETHER THE ANS IS RITE,,PLZ HELP

106
Asish Mahapatra ·

avinav...

can u just post what answers r given in ur book?

1
Avinav Prakash ·

hint for..Q1..more sustituted alkene

13
Avik ·

2)I go with 2>1>3>4 too.

11
swaraj jena ·

Q2>cant see any difference in these pictures

29
govind ·

In qn. 1 Heat of hydrogenation α 1/ stability
so the answer shud be a > b > c > d.
in qn.2 see the stability of carbocation
so the answer shud be 2>1>3>4

1
pratik123 agrawal ·

is the answer of question 1 is a>c>b>d

11
swaraj jena ·

Q2 .4>3>2>1

106
Asish Mahapatra ·

Q1. is it a>d>c>b?
Q2. 2>1>3>4 ??

wow what a variety of answers (im also adding to the variety) [3]

1
sumit_kumar ·

For 1) is it d>a>b>c

For 2) 3>1>2>4

1
pranav ·

is it

b > a > c > d

but m not sure!!

1
Avinav Prakash ·

SORY GUYS.now...i ve edited q2.. SRY avik n swaraj thats not the ans...

11
swaraj jena ·

i think d>c>b>a

13
Avik ·

Now this is Egjactly the thread i wanted!...one on GOC, a hope fr some improvement :P.

1) A Pure Guess [3] - a>d>b>c.

Request : Lets keep the nxt 4-5 days fr revising goc completely here, qns & discussions ; shud benefit all.

'Coz i, n i know most of u might also be striving fr confidence in goc, try keep the thread alive...,,,,,......,,,,,...if Avinav dosen't mind :P.

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