Coordination Compounds — Chemistry STD 12 Science — Question

$C{H_3}COOH\xrightarrow{{N{H_3}}}A\mathop {\xrightarrow{\Delta }}\limits_{{P_2}{O_5}} B$

${C_2}{H_4}O\left( g \right) \to C{H_4}\left( g \right) + CO\left( g \right)$

if the initial pressure of $C_2H_4O(g)$ is $80\  mm$ and the total pressure at the end of $20\  minutes$ is $120\  mm$ ........... $mm$

$(i)$ $CH_3CH_2COCH_2Cl$ $(ii)$ $C_6H_5COCH_3$

$(iii)$ $C_6H_5COCHCl_2$ $(iv)$ $CH_3CH_2COCCl_3$