JEE Exam > JEE Questions > The increasing order of the rate of HCN addit...
Start Learning for Free
The increasing order of the rate of HCN addition to compound A – D is
(A) HCHO
(B) CH3COCH3
(C) PhCOCH3
(D) PhCOPh
(B) CH3COCH3
(C) PhCOCH3
(D) PhCOPh
- a)D < C < B < A
- b)C < D < B < A
- c)A < B < C < D
- d)D < B < C < A
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The increasing order of the rate of HCN addition to compound A –...
NOTE : Addition of HCN to carbonyl compounds is nucleophilic addition reaction. The order of reactivity of carbonyl compounds is Aldehydes (smaller to higher) Ketones (smaller to higher), Then
HCHO > CH3COCH3 > Ph.COCH3 > PhCOPh
NOTE : The lower reactivity of Ketones is due to presence of two alkyl group which shows +I effect.
The reactivity of Ketones decreases as the size of alkyl group increases.
The reactivity of Ketones decreases as the size of alkyl group increases.
Most Upvoted Answer
The increasing order of the rate of HCN addition to compound A –...
Explanation:
Rate of HCN addition:
- The rate of HCN addition to compounds is determined by the reactivity of the carbonyl group in the compound towards nucleophilic attack by cyanide ion.
Increasing order:
- The increasing order of the rate of HCN addition to compounds A-D is as follows:
Compound A (HCHO):
- Formaldehyde (HCHO) has the highest reactivity towards nucleophilic attack due to the absence of any bulky groups that can hinder the approach of the cyanide ion.
Compound B (CH3COCH3):
- Acetone (CH3COCH3) has a methyl group attached to the carbonyl group, which slightly hinders the nucleophilic attack compared to formaldehyde.
Compound C (PhCOCH3):
- Acetophenone (PhCOCH3) has a phenyl group attached to the carbonyl group, which further hinders the nucleophilic attack compared to acetone.
Compound D (PhCOPh):
- Benzophenone (PhCOPh) has two phenyl groups attached to the carbonyl group, making it the least reactive towards nucleophilic attack among the given compounds.
Therefore, the correct increasing order of the rate of HCN addition is A < b="" />< c="" />< d.="" />
Rate of HCN addition:
- The rate of HCN addition to compounds is determined by the reactivity of the carbonyl group in the compound towards nucleophilic attack by cyanide ion.
Increasing order:
- The increasing order of the rate of HCN addition to compounds A-D is as follows:
Compound A (HCHO):
- Formaldehyde (HCHO) has the highest reactivity towards nucleophilic attack due to the absence of any bulky groups that can hinder the approach of the cyanide ion.
Compound B (CH3COCH3):
- Acetone (CH3COCH3) has a methyl group attached to the carbonyl group, which slightly hinders the nucleophilic attack compared to formaldehyde.
Compound C (PhCOCH3):
- Acetophenone (PhCOCH3) has a phenyl group attached to the carbonyl group, which further hinders the nucleophilic attack compared to acetone.
Compound D (PhCOPh):
- Benzophenone (PhCOPh) has two phenyl groups attached to the carbonyl group, making it the least reactive towards nucleophilic attack among the given compounds.
Therefore, the correct increasing order of the rate of HCN addition is A < b="" />< c="" />< d.="" />
|
Explore Courses for JEE exam
|
|
Top Courses for JEEView all
Question Description
The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer?.
The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer?.
Solutions for The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer?, a detailed solution for The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The increasing order of the rate of HCN addition to compound A – D is(A) HCHO(B) CH3COCH3(C) PhCOCH3(D) PhCOPha)D < C < B < Ab)C < D < B < Ac)A < B < C < Dd)D < B < C < ACorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice JEE tests.
|
|
Explore Courses for JEE exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup