Which of the following is the industrial method of preparation of acetaldehyde

Options

A. `CH_(3)CN overset(SnCI_(2))underset(HCI)rarr CH_(3)CH=NH overset(H_(3)O^(+))rarr CH_(3)CHO`
B. `CH_(3)COCI+H_(2)overset(Pd)underset(BaSO_(4))rarr CH_(3)CHO+HCI`
C. `CH_(2)=CH_(2)+H_(2)O overset(Pd^(++))rarr CH_(3)CHO`
D. None of these

Answer

C

Explanation

This is Wacker process
`H_(2)C = CH_(2)+PdCI_(2)+ H_(2)O overset(CuCI_(2))underset("air or" O_(2))rarr H_(3)C CHO + Pd + 2HCI`
`[Pd + 2HCI rarr PdCI_(2)+H_(2) Pd + 2CuCI_(2) rarr PdCI_(2) +2 CuCI]`.