State the formula for the change in entropy when a system absorbs heat reversibly at…

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Thermodynamics · Thermodynamics

Problem

State the formula for the change in entropy

\Delta S

when a system absorbs heat

Q_{\text{rev}}

reversibly at a constant temperature

T

. (a)

\Delta S = -\dfrac{Q_{\text{rev}}}{T}

(b)

\Delta S = \dfrac{Q_{\text{rev}}}{T}

(c)

\Delta S = \dfrac{Q_{\text{rev}}\,\ln T}{T}

(d)

\Delta S = \dfrac{Q_{\text{rev}}}{2T}