Question

Two moles of an ideal gas is expanded isothermally and reversibly from $1\text{L}$ to $10\text{L}$ at $300\text{K}$. The internal energy change $\left(\text{in kJ}\right)$ for the process is

• A. 11.4 kJ
• B. -11.4 kJ
• C. 0 kJ
• D. 4.8 kJ

Answer 1

The correct option is C 0 kJ

We know,
$△U=n{C}_V△T$
Since $△T=0$, then $△U$ will be zero.