Question

Acetaldehyde reacts with PCl5 to give ?

Answer 1

Acetaldehyde on reaction with PCl5 form gem dichloride. The reaction is as follows:
CH3CHO  +  PCl5  →  CH3CHCl2  +  POCl3

Answer 2

Explanation:

When acetaldehyde reacts with phosphorous pentachloride then it results in the formation of 1, 1-Dichloroethane and phosphoryl chloride.

The chemical reaction equation for this reaction will be as follows.

   $CH_{3}CHO + PCl_{5} \rightarrow CH_{3}CHCl_{2} + POCl_{3}$

This reaction is a chemical reaction as there occurs change in chemical composition of reactants.