Consider the half-cell reduction reaction: Mn 2 + + 2 e − → Mn , E o = − 1.18 V Mn 2 + → Mn 3 + + e − , E o = 1.51 V The E ∘ for the reaction 3 Mn 2 + → Mn 0 + 2 Mn 3 + , and possibility of the fo

Question

Consider the half-cell reduction reaction: ​ Mn 2 + + 2 e − → Mn , E o = − 1.18 V Mn 2 + → Mn 3 + + e − , E o = 1.51 V ​ The E ∘ for the reaction 3 Mn 2 + → Mn 0 + 2 Mn 3 + , and possibility of the forward reaction are respectivelyNEET 2013 (Karnataka)

TestHub · Accepted Answer

Mn 2 + 2 e − → Mn E 0 = − 1.18 V ​ 2 Mn 2 + → 2 Mn 3 + + 2 e E ∘ = − 1.15 V 3 Mn 2 + → Mn + 2 Mn 3 + E ∘ = − 2.69 V ​ The process is non spontaneous because the E ∘ value is negative.

Chemistry - Electrochemistry Question with Solution | TestHub

Options:

Doubts & Discussion