Question

At the equilibrium of the reaction , ` 2X (g) + Y (g) to X_(2)Y (g) " the number of moles of " X_(2)Y ` at equilibrium is affected by the
A. temperature and pressure
B. temperature only
C. pressure only
D. temperature , pressure and catalyst used

Answer 1

Correct Answer - A
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 .