Calculate K at 25C for the rxns (electrochem)

 

The rxns are:

A. Cr^3+(aq) + Cl2(g) <-> Cr2O7^2-(aq) + Cl-(aq)
E(Cr3+/CrO72-)(std) = -1.33V
E(Cl2/Cl-)(std) = 1.36V

B. Cu^2+(aq) + Mg(s) <-> Mg^2+(aq) + Cu(s)
E(Cu2+/Cu)(std) = 0.34V
E(Mg/Mg2+)(std) = 2.37V

C. Cl2 + 2e- -> 2Cl- E(std) = 1.36V
Br2 + 2e- -> 2Br- E(std) = 1.09V

D. MnO4^- + 8H+…