Aluminium displaces hydrogen from dilute HCl whereas silver does not. The emf of A cell prepared by combining ${\rm{Al}}/{\rm{A}}{{\rm{l}}^{3 + }}$ and ${\rm{Ag}}/{\rm{A}}{{\rm{g}}^ + }$ is 2.46 V. The reduction potential of silver electrode is +0.80 V. The reduction potential of aluminium electrode is

NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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Aluminium displaces hydrogen from dilute HCl whereas silver does not. The emf of A cell prepared by combining

\mathrm{Al}/\mathrm{A}{\mathrm{l}^{3 + }}

and

\mathrm{Ag}/\mathrm{A}{\mathrm{g}^ + }

is 2.46 V. The reduction potential of silver electrode is +0.80 V. The reduction potential of aluminium electrode is

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Correct option: D

-1.66 V

Option D (-1.66 V) is correct because the cell potential is the difference between the reduction potentials of the cathode and anode, and aluminium is the anode in this case.

NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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