The standard reduction potentials at ${25^ \circ }C$ of ${\rm{Li}} + |{\rm{Li}},{\rm{B}}{{\rm{a}}^{2 + }}\left| {{\rm{Ba}},{\rm{N}}{{\rm{a}}^ + }} \right|{\rm{Na}}$ and ${\rm{M}}{{\rm{g}}^{2 + }}|{\rm{Mg}}$ are $ - 3.05, - 2.73, - 2.71$ and $ - 2.37{\rm{V}}$ respectively. Which is strongest reducing agent?

NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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The standard reduction potentials at

{25^ \circ }C

\mathrm{Li} + |\mathrm{Li},\mathrm{B}{\mathrm{a}^{2 + }}\left| {\mathrm{Ba},\mathrm{N}{\mathrm{a}^ + }} \right|\mathrm{Na}

and

\mathrm{M}{\mathrm{g}^{2 + }}|\mathrm{Mg}

are

- 3.05, - 2.73, - 2.71

and

- 2.37\mathrm{V}

respectively. Which is strongest reducing agent?

View answer and explanation

Correct option: A

Option A is correct because the strongest reducing agent is the one with the most negative standard reduction potential. Among the given options, Li has the most negative value (-3.05 V), indicating it has the highest tendency to be oxidized and thus is the strongest reducing agent.

NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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