For the galvanic cell that uses the reaction

2 Al(s) + 3 Ni2+(aq) → 2 Al3+(aq) + 3 Ni(s)

the value of n in the relationship ΔG° = -nFE° is ________.

1 answer

Note Al goes from zero oxidation state to 3+ so each Al loses 3e. For 2Al that will be 6 electrons. To check that, Ni^2+ gains 2 electrons for each Ni or 6e for 3 Ni. 6 electrons again. So n is 6.
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