If CP and CV denote the specific heats of nitrogen per unit mass at constant pressure and constant volume respectively, then
(a) CP – CV = 28R 

(b) CP –  V = R/28

(c) CP – CV = R/14 

(d) CP – CV = R

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1 Answers

(b) : Molar heat capacity = Molar mass × specific heat capacity
So, the molar heat capacities at constant pressure and constant volume will be 28CP and 28CV respectively

Therefore, 28CP – 28CV = R or CP - CV = R/28.

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