Question
The molar specific heat at constant pressure of an ideal gas is (7/2)R. The ratio of specific heat at constant pressure to that at constant volume is
-
7/5
-
8/7
-
5/7
-
9/7
Solution
A.
7/5
We have given molar specific heat at constant pressure
Mayor's relation can be written as:
Molar specific heat at constant volume = Gas constant
i.e., CP - CV = R
Hence, required ratio is