Consider the following electrochemical cell :\ $ \mathrm{Pt}\left|\mathrm{O}_2(\mathrm{~g})(1 \math

Question

Consider the following electrochemical cell :\ $ \mathrm{Pt}\left|\mathrm{O}_2(\mathrm{~g})(1 \mathrm{bar})ight| \mathrm{HCl}(\mathrm{aq}) \| \mathrm{M}^{2+}(\mathrm{aq}, 1.0 \mathrm{M}) \mid \mathrm{M}(\mathrm{~s}) $\The pH above which, oxygen gas would start to evolve at anode is $\_\_\_\_$ (nearest integer).

Professor PC Thomas Classes · Answer

See detailed solution for explanation.