o obtain integrated form of Clausius-Clayperon equation, In` P_2/P_1 = (Delta^H V)/(R) [ 1/T_1 - 1/T_2]`, from the exact Clayperon equafion, it is assumed that the
A. volume of the liquid phase is negligible compared to that of vapour phase.
B. vapour phase behaves as an ideal gas
C. heat of vaporisation is independent of temperature.