1. What is the standard cell potential for a galvanic cell that consists of Au3+/Au and Ni2+/Ni half-cells? Identify the oxidizing and reducing agents.

2. b) Consider a galvanic cell based on the following half-cells:

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MME3101 Materials Degradation Tutorial 2020/2021 Dr Sophie M Briffa

Cu2+ (aq) + 2 e Cu (s); E = 0.34 V Mg2+ (aq)+2eMg(s);E=2.37V

Write the anode halfreaction, the cathode halfreaction, and the overall cell reaction. Then determine Ecell

c) Consider the following galvanic cell: anode: Ti (s) Ti+ (aq) + e; Eanode = 0.34V

cathode: Ni2+ (aq) + 2 e Ni (s); Ecathode = 0.24V

Determine the concentration of Ti+ (aq) if the cell operates at E = 0.15V at 25C when [Ni2+] = 3.3 M.

d) What is the cell potential for the following reaction at room temperature? Zn(s)Zn2+(aq,\0.15M)Cu2+(aq,\0.4M)Cu(s)