Gibbs Free Energy
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9 Terms
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What does Gibbs Free Energy tell us about a reaction?
Tells us whether a reaction is feasible or not.
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What is the symbol for Gibbs free energy?
ΔG.
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How is Gibbs Free Energy calculated?
ΔG=ΔH – TΔS
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What is Gibbs Free energy measured in?
J mol-1
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If ΔG is negative,…
A reaction is feasible.
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Even if a reaction is calculated to be feasible, a reaction may not be observed to occur. Why is this?
The activation energy may be too high.
The rate of the reaction is slow.
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If ΔG is positive,…
At a particular temperature, the reaction is not feasible.
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What are the 4 possibilities for a reaction to occur?
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How can you calculate the temperature at which a reaction just becomes feasible?
ΔG = 0,
therefore,
T = ΔH / ΔS
Note 
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