Write half-reactions for the anode and cathode and then write a balanced cell reaction. Please include the states of matter in the equations.

Question

A voltaic cell with an aqueous electrolyte is based on the reaction between Cd²⁺(aq) and Mg(s), producing Cd(s) and Mg²⁺(aq). Write half-reactions for the anode and cathode and then write a balanced cell reaction. Please include the states of matter in the equations.

A. Anode Equation

B. Cathode Equation

C. Cell Equation

Answer 1

For the reaction Cd²⁺(aq) + Mg(s) ==> Mg²⁺(aq) + Cd(s), the Cd²⁺ is being reduced (cathode) and the Mg(s) is being oxidized (anode).

A. Anode equation: Mg(s) ==> Mg²⁺(aq) + 2e-

B. Cathode equation: Cd²⁺(aq) + 2e- ==> Cd(s)

C. Cell equation: Cd²⁺(aq) + Mg(s) ==> Mg²⁺(aq) + Cd(s)