Class 12 Exam  >  Class 12 Questions  >  Read the assertion and reason carefully to ma... Start Learning for Free
Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.
Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.
  • a)
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • b)
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • c)
    If assertion is true but reason is false.
  • d)
    If the assertion and reason both are false.
  • e)
    If assertion is false but reason is true.
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Read the assertion and reason carefully to mark the correct option out...
Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemisation.
Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.
Free Test
Community Answer
Read the assertion and reason carefully to mark the correct option out...
Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.
Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.

The correct option is A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

Explanation:
To understand the assertion and reason provided, let's break down the information and analyze it step by step.

Optically active 2-iodobutane:
2-iodobutane is a chiral molecule with a stereocenter, meaning it has two different enantiomers (mirror images) that are non-superimposable. This molecule can rotate the plane of polarized light and is therefore optically active.

Treatment with NaI in acetone:
When 2-iodobutane is treated with NaI (sodium iodide) in acetone, a substitution reaction takes place. The iodide ion (I-) from NaI replaces the leaving group (iodine atom) in 2-iodobutane, resulting in the formation of 2-iodobutane and sodium iodide as the byproduct.

Walden inversion:
Walden inversion refers to the inversion of the configuration at a stereocenter during a nucleophilic substitution reaction. In this case, when the iodide ion attacks the 2-iodobutane, the configuration at the stereocenter is inverted, resulting in the formation of the opposite enantiomer.

Racemization:
Racemization occurs when a chiral compound is converted into a racemic mixture, which contains equal amounts of both enantiomers. In this case, the repeated Walden inversions on the reactant (optically active 2-iodobutane) and its product (generated by the substitution reaction) lead to the formation of a racemic mixture.

Explanation of the reason:
The reason provided in the assertion-reason pair correctly explains why optically active 2-iodobutane undergoes racemization. The repeated Walden inversions during the substitution reaction lead to the formation of both enantiomers, resulting in a racemic mixture.

Therefore, option A is the correct answer as both the assertion and reason are true, and the reason is the correct explanation of the assertion.
Explore Courses for Class 12 exam

Top Courses for Class 12

Question Description
Read the assertion and reason carefully to mark the correct option out of the options given below:Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.a)If both assertion and reason are true and the reason is the correct explanation of the assertion.b)If both assertion and reason are true but reason is not the correct explanation of the assertion.c)If assertion is true but reason is false.d)If the assertion and reason both are false.e)If assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Read the assertion and reason carefully to mark the correct option out of the options given below:Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.a)If both assertion and reason are true and the reason is the correct explanation of the assertion.b)If both assertion and reason are true but reason is not the correct explanation of the assertion.c)If assertion is true but reason is false.d)If the assertion and reason both are false.e)If assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the assertion and reason carefully to mark the correct option out of the options given below:Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.a)If both assertion and reason are true and the reason is the correct explanation of the assertion.b)If both assertion and reason are true but reason is not the correct explanation of the assertion.c)If assertion is true but reason is false.d)If the assertion and reason both are false.e)If assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Read the assertion and reason carefully to mark the correct option out of the options given below:Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.a)If both assertion and reason are true and the reason is the correct explanation of the assertion.b)If both assertion and reason are true but reason is not the correct explanation of the assertion.c)If assertion is true but reason is false.d)If the assertion and reason both are false.e)If assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Read the assertion and reason carefully to mark the correct option out of the options given below:Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.a)If both assertion and reason are true and the reason is the correct explanation of the assertion.b)If both assertion and reason are true but reason is not the correct explanation of the assertion.c)If assertion is true but reason is false.d)If the assertion and reason both are false.e)If assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Read the assertion and reason carefully to mark the correct option out of the options given below:Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.a)If both assertion and reason are true and the reason is the correct explanation of the assertion.b)If both assertion and reason are true but reason is not the correct explanation of the assertion.c)If assertion is true but reason is false.d)If the assertion and reason both are false.e)If assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Read the assertion and reason carefully to mark the correct option out of the options given below:Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.a)If both assertion and reason are true and the reason is the correct explanation of the assertion.b)If both assertion and reason are true but reason is not the correct explanation of the assertion.c)If assertion is true but reason is false.d)If the assertion and reason both are false.e)If assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Read the assertion and reason carefully to mark the correct option out of the options given below:Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.a)If both assertion and reason are true and the reason is the correct explanation of the assertion.b)If both assertion and reason are true but reason is not the correct explanation of the assertion.c)If assertion is true but reason is false.d)If the assertion and reason both are false.e)If assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Read the assertion and reason carefully to mark the correct option out of the options given below:Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes racemization.Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture.a)If both assertion and reason are true and the reason is the correct explanation of the assertion.b)If both assertion and reason are true but reason is not the correct explanation of the assertion.c)If assertion is true but reason is false.d)If the assertion and reason both are false.e)If assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
Explore Courses for Class 12 exam

Top Courses for Class 12

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev