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Home  >>  JEEMAIN and AIPMT  >>  Chemistry  >>  Equilibrium
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For a very small extent of dissociation of $PCl_5(g) \rightleftharpoons PCl_3(g) + Cl_2(g)$ is a gaseous phase reaction then degree of dissociation, x:

(a) $x \propto P$

(b) $ x \propto \frac{1}{P}$

(c) $ x \propto \sqrt{P} $

(d) $ x \propto \sqrt{\frac{1}{P}}$


Can you answer this question?

1 Answer

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Answer: $ x \propto \sqrt{\frac{1}{P}} $


$ PCl_5 \rightleftharpoons PCl_3 + Cl_2 $


Degree of dissociation (or quantity of products formed)


$ x \propto (\frac{1}{P}^{\Delta n_g / 2}) $

where P is the total pressure.


Here, $\Delta n_g$ = 2 - 1 = 1


$ \therefore x \propto (\frac{1}{P})^{\frac{1}{2}} $ or $ x \propto \sqrt{\frac{1}{P}} $


answered Nov 16, 2013 by mosymeow_1
edited Nov 23, 2013 by mosymeow_1

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