Question

Calculate the standard emf of a cell that uses Ag/Ag+ and Al/Al3+ half-cell reactions. Write the cell reaction that occurs under standard-state conditions.

Answer 1

E⁰(Ag⁺/Ag) = 0.80 V

E⁰(Al³⁺/Al) = -1.66 V

EMF = 0.80-(-1.66) = 2.46 V

Al + 3Ag⁺ = Al³⁺ + 3Ag