JEE MAIN - Chemistry (2023 - 25th January Morning Shift - No. 11)
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 :
A is false but R is true.
Both A and R are true but R is NOT the correct explanation of A
Both A and R are true and R is the correct explanation of A
A is true but R is false.
Explanation
For Assertion: Acetal and ketals are basically
ethers hence they must be stable in basic medium
but should break down in acidic medium.
Hence assertion is correct.
For reason: Alkoxide ion (ROā) is not considered a good leaving group hence reason must be false.
For reason: Alkoxide ion (ROā) is not considered a good leaving group hence reason must be false.
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