A diatomic ideal gas of 1 mole is taken via three different thermodynamic proces

Question

A diatomic ideal gas of 1 mole is taken via three different thermodynamic processes: labeled 1; 2; and 3; from an isotherm at a temperature T to a second isotherm at a temperature T+ delta T as shown in the PV diagram below. Explain in detail which thermodynamic process involves the most work (W). Explain which thermodynamic process involves the greatest change in the internal energy (delta E_int) of the ideal gas. Explain in detail whether process 2 or process 3 involves the larger amount of heat (Q) transfer.

Explanation / Answer

1)

Process 3 involves greater Work as W = p*delta V and the change in volume is greater for Process 3.

2)

The Process with greatest change in temparature will have greatest change in Internal energy. Here only 2 isotherms are there, so the change in temparature remains the same.

3)

Process 3 involves larger heat transfer as work done is more

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