Question

Which is incorrect? multiple choice at equilibrium, ecell = 0. e > 0 for a spontaneous process. e = 0 for a spontaneous process. δg < 0 for a spontaneous process. δg = 0 at equilibrium.

Answer 1

The incorrect statement is e = 0 for a spontaneous reaction.

• e cell = 0

The cell potential is 0 at equilibrium.

• e > 0 for a spontaneous reaction

For a spontaneous reaction the value cell potential E cell is positive i.e. >0

• e = 0 for a spontaneous reaction

This statement is incorrect because the potential of a cell is positive if the reaction is spontaneous. Hence it cannot be zero.

• δ g < 0 for a spontaneous reaction

For a spontaneous reaction gibbs free energy δ g value is negative i.e. < 0

• δg = 0 at equilibrium.

At equilibrium the value of gibbs free energy is zero i.e. δg = 0

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