Question

A liquid is in equilibrium with its vapour at its equilibrium point . On an average the molecules in two phases have equal

A_potential energy. B_kinetic energy C_Total energy D_Intermolecular forces

Answer 1

(B)kinetic energy

the reason is in liquid , vapour equilibrium the rate at which molecules escape from the liquid surface to the gaseous phase equal to the rate at which molecules in the gas phase strikes the surface and becomes the part of liquid.