Calculate the change in total entropy of system and surroundings for a isothermal irreversible expansion of...
Calculate the change in total entropy of system and surroundings for a isothermal irreversible expansion of 1.9 mol of a perfect gas from 7.3 L to 18.4 L against a constant external pressure of 1.9 bar at 298 K.
Answer is 7.5 but I want to understand how to get to that answer.
Homework Answers
The complete calculation of the total change in entropy is given as below:-
So, the total change in entropy for 1 mole = 7.68 J/K and the total change in entropy for 1.9 mole = 14.6 J/K.
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a) q and w for a reversible expansion to twice the volume,
isothermally.
b)
S and
G for irreversible isothermal expansion against a constant 0.5 bar
external pressure, to a final internal pressure of 0.5 bar.
c)
U and
H for adiabatic reversible expansion to twice the volume.
markah) Calculate the entropy change of the system and the surroundings for the isothermal freezing of 1 mol of supercooled liquid copper at 900 °C when the surroundings are also at the same temperature. Assume that C, for liquid copper also holds good for supercooled liquid copper. Kirakan perubahan entropi sistem dan persekitaran untuk pembekuan isoterma bagi 1 mol cecair super-dingin tembaga pada suhu 900 °C apabila persekitaran mempunyai suhu yang sama. Andaikan Cp untuk cecair tembaga juga boleh digunapakal...
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