Question

Is ${PCl}_3$ soluble in water?

• A. Not Soluble
• B. May be
• C. Partially soluble
• D. Soluble

Answer 1

Answer: (D)

like dissolve like. It means polar molecules dissolves in polar molecules and non-polar molecules.Molecules dissolves in non polar molecules $Water$ and $PC{l}_3$ both are polar molecules because of their shape and electronegative difference between $H$ and $O$ in water and $P$ and $Cl$ in $PC{l}_3$. Hence $PC{l}_3$ is solube in water.

$PC{l}_3$ dissolve in water to form phosphorous acid.

$PC{l}_3$ $+$ $3H_{2}O$ $⟶$ $H_{3}P{O}_3$ $+$ $3HCl$