Paper: CSIR-NET June 2019 · Subject: Physical Chemistry · Chapter: Thermodynamics · Topic: Laws State Functions · Marks: 2 · Difficulty: Medium
A sample of 2.0 moles of $\mathrm{O}_{2}(\mathrm{g})$ (assumed ideal) at 500 K is expanded from 5 L to 50 L under adiabatic and reversible conditions. The change in its internal energy (in kJ) is close to $\mathrm{R}=8.3 \mathrm{K}^{-1} \mathrm{mol}^{-1} ; \mathrm{C}_{\mathrm{V}, \mathrm{m}}=\frac{5}{2} \mathrm{R}$