MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryThermodynamics and ThermochemistryEnthalpy and Heat Capacity of A System

Molar heat capacity of water in equilibrium with ice at constant pressure is

A.zero

C.40.45 kJ K–1mol–1

D.75.48 J K–1 mol–1

Explanation

Molar heat capacity at constant pressure can be expressed as: p p H C T As it is equilibrium with ice, it is an isothermal process. For an isothermal process, 0 T . p p H C 0

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