Question

The specific heats at constant pressure is greater than that of the same gas at constant volume because

• A. At constant pressure work is done in expanding the gas
• B. At constant volume work is done in expanding the gas
• C. The molecular attraction increases more at constant pressure
• D. The molecular vibration increases more at constant pressure

Answer 1

Answer: (A)

At constant pressure work is done in expanding the gas

Answer 2

$C_{P} > C_{V}$