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Q. Among the following halides, $\left(NCl\right)_{3}\left(\right.I\left.\right),\left(PCl\right)_{3 }\left(\right.II\left.\right)$ and $\left(AsCl\right)_{3}\left(\right.III\left.\right),$ more than one type of acid in aqueous solution is formed with:

NTA AbhyasNTA Abhyas 2020

Solution:

Among the halides $\left(NCl\right)_{3 }\left(\right.I\left.\right),\left(PCl\right)_{3}\left(\right.II\left.\right)and\left(AsCl\right)_{3}\left(\right.III\left.\right),$
$NCl_{3}+3H_{2}O \rightarrow NH_{3}+3HOCl$
$PCl_{3}+3H_{2}O \rightarrow H_{3}PO_{3}+3HCl$
$AsCl_{3}+3H_{2}O \rightarrow H_{3}AsO_{3}+3HCl$