Answer to Question #244029 in Atomic and Nuclear Physics for Michael

Question

An electrochemical cell consists of pure cadmium immersed in a solution of Cd²⁺ ions and pure nickel in a solution of Ni²⁺ ions. Assume that the standard electrode potentials for Ni and Cd are –0.250 V and –0.403 V, respectively.

1. If the cell is a standard one (ie, 1 M solution for both ions at 25 °C):
2. Which electrode will be oxidised and which electrode will be reduced?                         [2]
   
3. Write the oxidation reaction, reduction reaction, and overall electrochemical reaction.      [2]
   
4. Calculate the standard voltage that is generated.               [2]

1. If the concentrations of Cd²⁺ and Ni²⁺ ions are 0.3 M and 10^-4 M respectively, compute the cell potential at 25 °C.          

Answer 1

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