Answer to Question #146787 in General Chemistry for qwerty

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