The colour of $CrO_4^{2-}(aq.)$ is not changed by:

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

The formation of ammonia from its constituent elements is an exothermic reaction. The effect of increasing temperature on the reaction equilibrium is

Raising the temperature of an equilibrium system:

Which of the following equilibria will shift to the right side by an increase in pressure?

Consider the reaction equilibrium,$2SO_{2(g)} + O_{2(g)} \rightleftharpoons 2SO_{3(g)}$; $\Delta H^\circ = -198 \ kJ$. On the basis of Le Chatelier's principle,the condition favourable for the forward reaction is