The standard oxidation potential of Ni/Ni²⁺ electrode is 0.236V. If this is combined with a hydrogen electrode in acid solution at what pH of the solution will measured E.M.F. will be zero $\text{ at }{25}^{\circ }\mathrm{C}\left(\left[{\mathrm{Ni}}^{2+}\right]=1\mathrm{M}\right.$