Redox and Equivalent ConceptHard

Question

During the oxidation of arsenite ion AsO33– to arsenate ion AsO43− in alkaline medium, the number of moles of hydroxide ions consumed per mole of arsenite ion is

Options

A.2
B.3
C.2/3
D.3/2

Solution

$AsO_{2}^{3 -} + 2OH^{-} \rightarrow AsO_{4}^{3 -} + H_{2}O + 2e^{-}$

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