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Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Acetal/Ketal is stable in basic medium. Reason R: The high leaving tendency of alkoxide ion gives the stability to acetal/ketal in basic medium. In the light of the above statements, choose the correct answer from the options given below: (1) Both A and R are true but R is NOT the correct explanation of A (2) Both A and R are true and R is the correct explanation of A (3) A is false but R is true (4) A is true but R is false

1. Both A and R are true but R is NOT the correct explanation of A
2. Both A and R are true and R is the correct explanation of A
3. A is false but R is true
4. A is true but R is false

Correct answer: A is true but R is false

Solution

Acetals and ketals are indeed stable in basic conditions, as they do not readily hydrolyze. However, the reason provided about the high leaving tendency of alkoxide ions does not accurately explain this stability, as the stability is more related to the lack of reactivity of the acetal/ketal under basic conditions rather than the behavior of alkoxide ions.

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