a) E = Eo [(2.303RT)/nF] log10 [H+].

b) E = Eo +[(2.303RT)/nF] log10 [H+].

**c) E = Eo – [(2.303RT)/nF] log10 [H+].**

d) E = Eo/ [(2.303RT)/nF] log10 [H+].

b) E = Eo +[(2.303RT)/nF] log10 [H+].

**c) E = Eo – [(2.303RT)/nF] log10 [H+].**

d) E = Eo/ [(2.303RT)/nF] log10 [H+].