What is the value of gibbs energy at equilibrium in closed system?
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Hello friend.......
at equilibrium a system is in dynamical equilibrium.
Both the forward and backward reactions occur at the same rate.
If the Gibbs energy change for the forward reaction is G, then the Gibbs energy change is -G for the backward reaction.
Total Gibbs energy at equilibrium is G+(-G)=0
✯ Gibbs free energy of a system is a minimum at equilibrium.
In other words,
as we know that
✯ ΔG = ΔH - T ΔS(in)
At equilibrium,
ΔH = 0 [equilibrium]
ΔS = 0 [closed system]
✯Therefore, ΔG = 0
at equilibrium a system is in dynamical equilibrium.
Both the forward and backward reactions occur at the same rate.
If the Gibbs energy change for the forward reaction is G, then the Gibbs energy change is -G for the backward reaction.
Total Gibbs energy at equilibrium is G+(-G)=0
✯ Gibbs free energy of a system is a minimum at equilibrium.
In other words,
as we know that
✯ ΔG = ΔH - T ΔS(in)
At equilibrium,
ΔH = 0 [equilibrium]
ΔS = 0 [closed system]
✯Therefore, ΔG = 0
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Answer:
It is important to realize that this condition is independent of whether or not reaction equilibrium is approached at constant temperature and pressure. It is a universal criterion of reaction equilibrium. The value of ΔrG is equal to ∑iνiμi and depends on the state of the system.
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