Change in entropy(specific heat, volume, pressure or temperature is not all constant)

Formula

Change in entropy(specific heat, volume, pressure or temperature is not all constant) formula
DeltaS
the entropy change
n
the number of moles of gas
Cv
the specific heat at constant volume
T
the final temperature
T0
the initial temperature
V
the final volume
V0
the initial volume
R
gas constant (8.3145)

Formula description

Entropy is a thermodynamic property that can be used to determine the energy available for useful work in a thermodynamic process, such as in energy conversion devices, engines, or machines. For some other transformations, not all of these properties (specific heat, volume, pressure or temperature) are constant. In these cases, for only 1 mole of an ideal gas, the change in entropy can be given by the formula.

Calculator (how to use calculator?)

Change in entropy(specific heat, volume, pressure or temperature is not all constant) formula
n
Cv
T
T0
V
V0
R
DeltaS
Precision

Formula code








References

  1. Wikipedia: the change in entropy at random condition (Given the specific heat at constant volume).

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