Question

Acetaldehyde reacts with PCl3 to give ?

Answer 1

Answer:

Acetaldehyde reacts with $PCl_3$ to give 1,1-dichloro ethane.

Explanation:

Ethanal or acetaldehyde when treated with phosphorus trichloride results in formation of  1,1-dichloro ethane.

$CH_3CHO+PCl_3\rightarrow CH_3CHCl_2$

By stoichiometry , 1mole of acetaldehyde reacts with 1mol of phosphorus trichloride gives 1 mole of 1,1-dichloro ethane.