Aldehydes Ketones And Carboxylic Acids

\(\text { Consider the following sequence of reactions to give the major product }(\mathrm{X})\)

P g of the major product $(\mathrm{X})$ formed is reacted with $\mathrm{NaHCO}_3$ solution to liberate a gas which occupied $11.2 \mathrm{dm}^3$ at STP.

\(\mathrm{P}=\text {______________ g. }\)

(Given molar mass in $\mathrm{g} \mathrm{mol}^{-1} \mathrm{H}: 1, \mathrm{C}: 12, \mathrm{O}: 16, \mathrm{Cl}: 35.5$ )