Question

The specific heat of a gas at constant volume is 21.2 J/mole/°C. If the temperature is increased by 1°C keeping the volume constant, the change in its internal energy will be

• A. 0
• B. 21.2 J
• C. 42.2 J
• D. 10.6 J

Answer 1

Answer: (B)

21.2 J

Answer 2

$\Delta U = \mu C_{V}\Delta T = 1 \times 21.2 \times 1 = 21.2J$