At equilibrium of the reaction
`2X(g)+Y(g) hArr X_(2)Y(g)`
the number of moles of `X_(2)Y` at equilibrium is affected by the

Options

A. temperature and pressure
B. temperature only
C. pressure only
D. temperature , pressure and catalyst used

Answer

A

Explanation

The given reaction is ccompanied by decrease of randomness, i.e., randompanied factor must favour opposes the process . Hence , the energy factor must favour , u.e ` Delta H = -ve` which means the reaction is exothermic . Alternatively , backward is dissociation reaction and hence endothermic. Also `n_(p) != n_(r) ` Hence , both temperature and pressure will affect the equilibrium .