Question

Which of the following is the correct equation?

(a) E = E^o [(2.303RT)/nF] log10 [H^+]

(b) E = E^o + [(2.303RT)/nF] log10 [H^+]

(c) E = E^o – [(2.303RT)/nF] log10 [H^+]

(d) E = E^o/[(2.303RT)/nF] log10 [H^+]

Answer 1

Right choice is (c) E = E^o – [(2.303RT)/nF] log10 [H^+]

To elaborate: E = E^o – [(2.303RT)/nF] log10 [H^+] is called Nernst equation. Where, E = single electrode potential, E^o = standard electrode potential, n = valency of ion, F = faraday.