In which of following reactions, increase in the volume at constant temperature does not affect the number of moles of at equilibrium?

Options

A. `2 NH_(3) to N_(2) + 3H_(2)`
B. `C_((g)) + (1)/(2) O_(2(g)) to CO_((g))`
C. `H_(2(s)) + O_(2(g)) to H_(2) O_(2(g))`
D. All of these

Answer

D

Explanation

Increase in volume does not affect the number of moles in equilibrium