pBlock ElementsII - Result Question 76
####71. Among the following, the number of compounds that can react with $PCl _5$ to give $POCl _3$ is $O _2, CO _2, SO _2, H _2 O$, $H _2 SO _4, P _4 O _{10}$.
(2011)
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Solution:
- $PCl _5$ produces $POCl _3$ with the following reagents
$$ \begin{aligned} PCl _5+SO _2 & \longrightarrow POCl _3+SOCl _2 \ PCl _5+H _2 O & \longrightarrow POCl _3+2 HCl \ 2 PCl _5+H _2 SO _4 & \longrightarrow SO _2 Cl _2+2 POCl _3+2 HCl \ 6 PCl _5+P _4 O _{10} & \longrightarrow 10 POCl _3 \end{aligned} $$
