Q19 / 225 · JEE Main 2003 · Chemistry

What may be expected to happen when phosphine gas is mixed with chlorine gas?

  • A
    $\mathrm{PCI}_3$ and $\mathrm{HCI}$ are formed and the mixture warms up
  • Correct answer
    B
    $\mathrm{PCI}_5$ and $\mathrm{HCI}$ are formed and the mixture cools down
  • C
    $\mathrm{PH}_3 . \mathrm{Cl}_2$ is formed with warming up
  • D
    The mixture only cools down

Solution

$\mathrm{PH}_3+4 \mathrm{Cl}_2 \rightarrow \mathrm{PCl}_5+3 \mathrm{HCI}$

Hence, the correct answer is option: 'B'.

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