![]() Isothermal 80 molar heat capacity is infinity. If C p (ice) = C p (water) = 4.18 J mol -1 K -1 molar heat capacity of such a system is Ice - Water mass ratio is maintained as 1 : 1 in a given system containing water in equilibrium with ice at constant pressure. ![]() In a chemical reaction the heat exchanged at constant temperature and constant pressure is called change inĮnthalpy change is the heat exchanged at constant temperature and pressure. Temperature remains constant, so enthalpy change for an isothermal process is equal to zero. The enthalpy change (in kJ) for the process is The mole of an ideal gas is expanded isothermally and reversibly from 1 litre to 10 litre at 300 K. ![]() 2 mole of an ideal gas at 27 0 C expands isothermally and reversibly from a volume of 4 litres to 40 litre.
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