Question

CV of a gas is 8 calK^-1mol^-1. Find CP/CV. Assume R = 2 calK^-1mol^-1.

(a) 1.4

(b) 1.33

(c) 1.25

(d) 1.8

The question was posed to me in an online interview.

My question is from Thermal Properties of Matter in portion Thermal Properties of Matter of Physics – Class 11

Answer 1

The correct answer is (c) 1.25

To explain: CP = CV + R = 8 + 2

= 10 calK^-1mol^-1.

CP/CV= 10 / 8 = 1.25.