The degree of dissociation $(\alpha )$ of $PCl_5$ obeying the equilibrium; is $PC{l_5}\, \rightleftharpoons \,PC{l_3}\, + \,C{l_2}$ related to the pressure at equlibrium by
The degree of dissociation $(\alpha )$ of $PCl_5$ obeying the equilibrium; is $PC{l_5}\, \rightleftharpoons \,PC{l_3}\, + \,C{l_2}$ related to the pressure at equlibrium by
- A
$\alpha \, \propto \,P$
- B
$\alpha \, \propto \,\frac{1}{{\sqrt P }}$
- C
$\alpha \, \propto \,\frac{1}{{{P^2}}}$
- D
$\alpha \, \propto \,\frac{1}{{{P^4}}}$
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- [IIT 2009]
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