Q.
The reactions of $Cl_2$ gas with cold-dilute and hot-concentrated $NaOH$ in water give sodium salts of two (different) oxoacids of chlorine, $P$ and $Q$, respectively. The $Cl_2$ gas reacts with $SO_2$ gas, in presence of charcoal, to give a product $R$. $R$ reacts with white phosphorus to give a compound $S$. On hydrolysis, $S$ gives an oxoacid of phosphorus, $T$.
$R$, $S$ and $T$, respectively are
The p-Block Elements - Part2
Solution: