Principles of Bioenergetics and Thermodynamics (1D)
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QUESTION
What sign of
Δ
S
\Delta S
Δ
S
indicates an increase in entropy (greater dispersal of energy/microstates)?
QUESTION
Identify when
Δ
G
\Delta G
Δ
G
is negative if
Δ
H
>
0
\Delta H > 0
Δ
H
>
0
and
Δ
S
>
0
\Delta S > 0
Δ
S
>
0
.
QUESTION
Identify the sign of
Δ
G
\Delta G
Δ
G
for a reaction with
Δ
H
>
0
\Delta H > 0
Δ
H
>
0
and
Δ
S
<
0
\Delta S < 0
Δ
S
<
0
at any
T
T
T
.
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ANSWER
Δ
G
>
0
\Delta G > 0
Δ
G
>
0
at all
T
T
T
. Positive enthalpy and negative entropy ensure the Gibbs free energy remains positive, preventing spontaneity at any temperature.
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