Question

Molar heat capacity of monoatomic gas in terms of pressure and volume

Answer 1

Molar heat capacity at constant volume(Cv): it is the amount of heat in calories required to raise the temperature of one mole of a gas through at constant volume, while the pressure is allowed to increase. It means that ratio of Cp and Cv is equal to 1.66 for mono atomic gases.

Answer 2

Also, for ideal monatomic gases: the molar heat capacity at constant pressure (Cp) is 5/2 R = 20.8 J K−1 mol−1 (4.97 cal K−1 mol−1); the molar heat capacity at constant volume (Cv) is 3/2 R = 12.5 J K−1 mol−1 (2.98 cal K−1 mol−1);