Entropy Change

Δ S = \frac{Q _{r e v}}{T}

Entropy change for reversible isothermal process.

Variables

ΔS

Entropy change

Change in entropy

J/K

Q_rev

Reversible heat

Heat in reversible process

Temperature

Absolute temperature

dS = δQ_rev/T. For isothermal: ΔS = Q/T.

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