In which of the folowing reactions, the system will shift towards the forward reaction by adding inert gas at constant pressure?

Options

A. `PCl_(5)(g) rarr PCl_(3)(g) + Cl_(2)(g)`
B. `N_(2)(g) + 3H_(2)(g) rarr 2NH_(3)(g)`
C. `COCl_(2)(g) rarr CO(g) + Cl_(2)(g)`
D. `CO(g) + 2H_(2)(g) rarr CH_(3)OH(g)`

Answer

A, C

Explanation

The equilibrium will shift in forward direction by adding inert gas in the system where there is an increase in number of gaseous moles (i.e.,`Deltan_(g) > 0`) in that direction. Note that in options (A) and (C), the value of `Deltan_(g) > 0`