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Question

For a given reaction, which of the following values can be determined from the value of ΔG
I. Cell potential, E
II. Activation energy, Ea
III. Equilibrium constant, Keq

A
I and II only
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B
I and III only
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C
III only
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D
I, II, and III
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E
None of these
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Solution

The correct option is A I and III only
Option B is the correct answer.
The relation between free energy and cell potential is given as:
ΔGocell=nFEocell
The relation between free energy and equilibrium constant is given as:
ΔGo=RTlnKeq
Activation energy cannot be determined from ΔGo

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