WB JEE Medical WB JEE Medical Solved Paper-2007

  • question_answer
    A liquid is in equilibrium with its vapour at its boiling point. On the average, the molecules in two phases have equal­­

    A)  inter- molecular forces

    B)  potential energy

    C)  kinetic energy

    D)  total energy

    Correct Answer: C

    Solution :

    ln liquid  vapour, equilibrium the rate at which molecules escape from the liquid surface to gaseous phase equals to rate at which molecules in the gas phase strike the surface and becomes the part of liquid. Hence, the molecules in the two phases have equal kinetic energy.


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