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Physics
Physics
Problem
State the formula for the change in entropy
Δ
S
\Delta S
Δ
S
when a system absorbs heat
Q
rev
Q_{\text{rev}}
Q
rev
reversibly at a constant temperature
T
T
T
. a)
Δ
S
=
−
Q
rev
T
\Delta S = -\dfrac{Q_{\text{rev}}}{T}
Δ
S
=
−
T
Q
rev
b)
Δ
S
=
Q
rev
T
\Delta S = \dfrac{Q_{\text{rev}}}{T}
Δ
S
=
T
Q
rev
c)
Δ
S
=
Q
rev
ln
T
T
\Delta S = \dfrac{Q_{\text{rev}}\,\ln T}{T}
Δ
S
=
T
Q
rev
ln
T
d)
Δ
S
=
Q
rev
2
T
\Delta S = \dfrac{Q_{\text{rev}}}{2T}
Δ
S
=
2
T
Q
rev
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