A certain ideal gas has a molar specific heat at constant pressure of 7R/2.What is its molar specific heat at constant volume?
A)5R/2
B)3R/2
C)8R
D)9R/2
E)6R

Question

Quizplus · Accepted Answer

The relationship between the molar specific heat at constant pressure (Cp) and the molar specific heat at constant volume (Cv) for an ideal gas is given by Cp - Cv = R. Given Cp = 7R/2, substituting into the equation gives 7R/2 - Cv = R, solving for Cv gives Cv = 5R/2.

A Certain Ideal Gas Has a Molar Specific Heat at Constant