Question

$200$ joules of heat was supplied to a system at constant volume. It resulted in the increase in temperature of the system from $298$ to $323\, K$. What is the change in internal energy of the system?

• A. $400 \,J$
• B. $200 \,J$
• C. $50 \,J$
• D. $150 \,J$

Answer 1

Answer: (B)

$200 \,J$

Answer 2

At constant volume, $\Delta V = 0$ $w = -P\Delta V = 0 \quad \Delta H = q = 200\, J$