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For each case determine the change in entropy for the surroundings and the universe, when 1...

For each case determine the change in entropy for the surroundings and the universe, when 1 mole of a diatomic gas expands from its initial volume of 5 L and 31.5 ◦C to:

CASE (a) a final volume of 25 L reversibly and isothermically.

CASE (b) irreversibly and isothermically against an external pressure of 1 atm.

CASE (c) a final volume of 25 L reversibly and adiabatically. Yes, it is zero, but you have to demonstrate it.

CASE (d) irreversibly and adiabatically against an external pressure of 1 atm.

PLEASE, complete answers from CASE A to D.

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