Question

For the reaction, $ PCl_5 \, ( g) \rightleftharpoons PCl_3 \, ( g) + Cl_2 \, ( g) $ the forward reaction at constant temperature is favoured by

• A. introducing an inert gas at constant volume
• B. introducing chlorine gas at constant volume
• C. introducing an inert gas at constant pressure
• D. increasing the volume of the container
• E. introducing $PCl_5$ at constant volume

Answer 1

Answer: (C), (D), (E)

If inert gas is introduced at constant pressure, volume of container will have to be increased and this will favour the forward reaction. Also adding $PCl_5$ (g )at constant volume will favour forward reaction because $PCl_5$ (g ) is a reactant.