Cell Potential Question

Question

Calculate the Eocell for the redox reaction shown below in volts:

2Li(s)+Mg+2(aq)→2Li+1(aq)+Mg(s)

Answer 1

Standard reduction potentials are as follows:

Li⁺ + e- ==> Li(s) Eº = -3.04 V

Mg²⁺ + 2e- ==> Mg(s) Eº = -2.38 V

Since the cell as written shows Mg2+ being reduced, it becomes the cathode and the Eºcell is...

-2.38 -(-3.04) = +0.66 V