Question

Using the following portion of the activity series for oxidation half reactions, determine which combination of reactants will result in a reaction.
Na(s) -> Na+(aq) + e-
Cr(s) -> Cr3+(aq) + 3 e-
A) Na(s) with Cr(s)
B) Na(s) with Cr3+(aq)
C) Na+(aq) with Cr3+(aq)
D) Na+(aq) with Cr(s)

Answer

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