In which of the following equilibrium ,change in volume of the system does not alter the number of moles:

Options

A. `N_(2)(g)+O_(2)(g)hArr2NO(g)`
B. `PCI_(3)(g)hArrPCI_(3)(g)+CI_(2)(g)`
C. `N_(2)(g)+3H_(2)(g)hArr2NH_(3)(g)`
D. `SO_(2)CI_(2)(g)hArrSO_(2)(g)+CI_(2)(g)`

Answer

A

Explanation

In this reaction the ratio of number of moles of reactants to products in same `i.e., 2:2`, hence change in volume will not alter the number of moles.