Compound A reacts with NH_4 Cl and forms a compound B. Compound B reacts with H_2 O and excess of CO_2 to form compound C which on passing through or…

Compound A reacts with $\displaystyle \mathrm{NH}_4 \mathrm{Cl}$ and forms a compound B . Compound B reacts with $\displaystyle \mathrm{H}_2 \mathrm{O}$ and excess of $\displaystyle \mathrm{CO}_2$ to form compound C which on passing through or reaction with saturated NaCl solution forms sodium hydrogen carbonate. Compound $\displaystyle \mathrm{A}, \mathrm{B}$ and C , are respectively.