a. Use your knowledge of redox and equilibrium to derive an expression for Keq in terms of E°cell for a general redox reaction. b. For the reaction Cr3+(aq) +Zn (s) <--> Cr (s) + Zn2+ (aq) calculate ΔG°rxn and Keq at 298 K.

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Q: at what pH does the reaction become spontaneous?

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