Question

When a reversible work is done by a galvanic cell, the relationship between Gibbs free energy and emf of the cell is given by the relationship as ____________.

Options

• `Δ_"r""G" = −"nFE"_"(cell)"`

• `Δ_"r""G" = −3"FE"_"(cell)"`

• `Δ_"r""G" = −2"FE"_"(cell)"`

• `Δ_"r""G" = −"FE"_"(cell)"`

Answer 1

When a reversible work is done by a galvanic cell, the relationship between Gibbs free energy and emf of the cell is given by the relationship as `underline(Δ_"r""G" = −"nFE"_"(cell)")`.

Explanation:

When galvanic cell operates, work is done on the surroundings, as electrical energy flows through an external circuit. such work by convention is taken as negative. so `Δ_"r""G" = −"nFE"_"(cell)"`.