What happens when ethanoyl chloride is reduced with `H_2` in the presence of `Pd//BaSO_4` ?

Explanation

The formation of aldehydes from acid chlorides is called Rosenmund.s reaction. For example, when ethanoyl chloride is reduced with `H_2` in the presence of `Pd//BaSO_4`, it gives acetaldehyde as a product.
`underset("Ethanoyl chloride")(CH_3COCl + H_2) overset(Pd//BaSO_4) to underset("Acetaldehyde")(CH_3CHO + HCl)`