Consider a galvanic cell consisting of the following two redox couplesAlB+ 3e Al , Mga + 2e Mg, (ag. E® = 1.676 V ) E° = 2.356 VA) Write the equation for the half-reaction occurring at the cathode. B) Write the equation for the half-reaction occurring at th anodeC) Write the overall equation for the cell reation. D) what is the standard cell potential EoCell, for the Cell?

0.68 V

Explanation:

For anode;

3Mg(s) >3Mg^2+(aq) + 6e

For cathode;

2Al^3+(aq) + 6e > 2Al(s)

Overall balanced reaction equation;

3Mg(s) + 2Al^3+(aq) > 3Mg^2+(aq) + 2Al(s)

Since

E°anode = -2.356 V

E°cathode = -1.676 V

E°cell=-1.676 -(-2.356)

E°cell= 0.68 V

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