NEETChemistryAldehydes and Ketones
Given below are two statements; one is labelled as Assertion (A) and the other is labelled as Reason(R). Assertion: Ketones react with ethylene glycol to form cyclic products known as ethylene glycol ketals in presence of dry HCl. Reason: Dry hydrogen chloride protonates the oxygen of the carbonyl compounds and therefore, increases the electrophilicity of the carbonyl carbon facilitating the nucleophilic attack of gl
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A).
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A).
- C(A) is correct but (R) is not correct.
- D(A) is not correct but (R) is correct.
Correct answer
A. Both (A) and (R) are correct and (R) is the correct explanation of (A).
Step-by-step solution
Assertion (A): "Ketones react with ethylene glycol to form cyclic products known as ethylene glycol ketals in the presence of dry HCl ." - This statement is correct. Ketones do react with ethylene glycol under acidic conditions (such as dry HCl) to form cyclic ketals. The dry HCl acts as a catalyst in this reaction, facilitating the formation of the ketal. Reason (R): "Dry hydrogen chloride protonates the oxygen of the carbonyl compounds and therefore increases the electrophilicity of the carbonyl carbon, facilitat