A sample of argon gas at 1 atm pressure and expands reversibly and adiabatically from to

PHYSICS · Subjective · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A sample of argon gas at 1 atm pressure and

27^\circ\text{C}

expands reversibly and adiabatically from

1.25 \text{ dm}^3

2.50 \text{ dm}^3

. Calculate the enthalpy change in this process.

C_{v,m}

for argon is

12.48 \text{ JK}^{-1} \text{ mol}^{-1}

. (IIT 2000)