Answer to Question #230308 in General Chemistry for pau

Question

Calculate the cell potential for the following reactions and predict whether the reaction

will take place. If it will take place, write the cell notation.

1. Zn (s) + 2 Ag+

(aq) → Zn+2 (aq) + 2 Ag (s)

2. Cu (s) + Ni+2 (aq) → Cu+2 (aq) + Ni (s)

Answer 1

The standard electrode potentials for Zinc, silver, copper and nickel ions are -0.763V, 0.800V, 0.337V and -0.230V respectively

1. Electrode potential = 0.763+ 0.800 = 1.563V

2. Electrode potential = 0.230+ 0.337 = 0.567V

Cell notation for 1. Zn/Zn2+ // 2Ag+ / 2Ag

Cell notation for 2. Cu/Cu2+ // Ni2+/Ni