Question
4 moles of an ideal monoatomic gas is mixed with 6 moles of a non reactive diatomic ideal gas. the molar heat capacity of the mixture at constant volume is (assume no vibration) nearly
(1) 27 J mol‾¹K‾¹
(2) 17 J mol‾¹K‾¹
(3) 7 J mol‾¹K‾¹
(4) 37 J mol‾¹K‾¹
Joshi sir comment
at constant volume work done = 0
degree of freedom = 4(3) + 6(5) / 4 + 6 = 12+30/10 = 4.2 so γ = 1 + (2/4.2)
so molar heat capacity = R/(γ-1)