Question
A translucent white waxy solid $$(A)$$ reacts with excess of chlorine to give a yellowish white powder $$(B).$$ $$(B)$$ reacts with organic compounds containing $$-OH$$ group and converts them into chloro derivatives. $$(B)$$ on hydrolysis gives $$(C)$$ and is finally converted to phosphoric acid. $$(A), (B)$$ and $$(C)$$ are
A.
$${P_4},PC{l_3},{H_3}P{O_4}$$
B.
$${P_4},PC{l_5},{H_3}P{O_3}$$
C.
$${P_4},PC{l_5},POC{l_3}$$
D.
$${P_4},PC{l_3},POC{l_3}$$
Answer :
$${P_4},PC{l_5},POC{l_3}$$
Solution :
$$\mathop {{P_4}}\limits_{\left( A \right)} + 10C{l_2} \to \mathop {4PC{l_5}}\limits_{\left( B \right)} $$
$$PC{l_5} + {C_2}{H_5}OH \to $$ $${C_2}{H_5}Cl + POC{l_3} + HCl$$
$$PC{l_5} + {H_2}O \to \mathop {POC{l_3} + }\limits_{\left( C \right)} 2HCl$$
$$POC{l_3} + 3{H_2}O \to {H_3}P{O_4} + 3HCl$$