Chemistry - ALCOHOL & ETHER Question with Solution | TestHub
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Order of acidic nature of the following compounds is A> B > C.
Reason R : Fluoro is a stronger electron withdrawing group than Chloro group.
In the light of the above statements, choose the correct answer from the options given below :
Options:
Answer:
Solution:
Explanation question :
Evaluate the Assertion A and Reason R regarding the acidity of substituted alcohols.
Concept: This question is based on acidic strength and inductive effect.
Solution:
About the Assertion & Reason: The Assertion ( ) is true.
The Reason ("Fluoro is a stronger electron withdrawing group than Chloro") is true as a general statement.
However the Reason does not correctly explain the Assertion here, because it ignores the distance (position) of the substituent. If position were identical, R would predict ( F stronger than Cl ). In our molecules the positional difference (vicinal Cl vs remote F ) reverses the effect. Assertion is True, Reason is True, but Reason is NOT the correct explanation for the Assertion.
Final Answer: The correct option is (C).
