Why does $PCl_3$ fume in moisture?

  • A
    Because of formation of $H_3PO_3$
  • B
    Because of formation of $HCl$
  • C
    Because of moisture
  • D
    None

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$I. \, PCl_3$ hydrolyses in the presence of moisture giving fumes of $HCl$.
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$III. \, $All the five bonds in the $PCl_5$ molecule are equivalent.
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