JEE Advanced Chemistry question

In the presence of H2O, SO2 acts as

(A)An oxidizing agent
(B)A reducing agentCorrect
(C)A hydrolyzing agent
(D)A redox reagent

Answer: (B)

Solution

In aqueous medium SO2 first forms sulphurous acid/hydrated SO2 and is then readily oxidised further to sulphate (S going from +4 to +6), releasing H⁺ and electrons: SO2 + 2H2O → SO4²⁻ + 4H⁺ +

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Question ID VK-159401