Physics

Physics

Problem

A sample of argon gas at 1 atm pressure and 27∘C27^\circ\text{C} expands reversibly and adiabatically from 1.25 dm31.25 \text{ dm}^3 to 2.50 dm32.50 \text{ dm}^3. Calculate the enthalpy change in this process. Cv,mC_{v,m} for argon is 12.48 JK−1 mol−112.48 \text{ JK}^{-1} \text{ mol}^{-1}. (IIT 2000)

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