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Which of the following reaction will be favoured at low pressure?
A. `H_(2)(g)+I_(2)(g) hArr 2HI(g)`
B. `N_(2)(g)+3H_(2)(g) hArr 2NH_(3)(g)`
C. `PCl_(5)(g) hArr PCl_(3)(g)+Cl_(2)(g)`
D. `N_(2)(g)+O_(2)(g) hArr 2NO(g)`

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Correct Answer - C
Number of moles are less on reactant side, hence on lowering the pressure, reaction will proceed in forward direction.

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