Given these standard reduction potentials: E°(Cr₂O₇²⁻/Cr³⁺) = +1.33 V; E°(Cl₂/Cl⁻) = +1.36 V; E°(MnO₄⁻/Mn²⁺) = +1.51 V; E°(Cr³⁺/Cr) = −0.74 V. Which ion is most stable in its reduced form?
Options:
Answer:
D
Solution:
Mn²⁺ is a stable reduced form of the strongly oxidising MnO₄⁻ couple in the given data.

Question

Given these standard reduction potentials: E°(Cr₂O₇²⁻/Cr³⁺) = +1.33 V; E°(Cl₂/Cl⁻) = +1.36 V; E°(MnO₄⁻/Mn²⁺) = +1.51 V; E°(Cr³⁺/Cr) = −0.74 V. Which ion is most stable in its reduced form?

Options:

Answer:

D

Solution:

Mn²⁺ is a stable reduced form of the strongly oxidising MnO₄⁻ couple in the given data.

TestHub · Accepted Answer

Mn²⁺ is a stable reduced form of the strongly oxidising MnO₄⁻ couple in the given data.

Chemistry - Electrochemistry Question with Solution | TestHub

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