Chemistry - Redox Reactions Question with Solution | TestHub

Equivalents per mole of oxidant = electrons gained: (a) VO²⁺ (V +4) $\to$ V³⁺: 1; (b) NO₂⁻ (N +3) $\to$ NO₂ (N +4) is oxidation, not an oxidant role; (c) V species reduced to V²⁺: at most 2-3; (d) IO₃⁻ (I +5) $\to$ I₃⁻ (I -1/3): 5 + 1/3 = 16/3 e⁻, the maximum. Hence (d).