JEE Advanced Chemistry question

Aqueous solutions of hydrogen sulphide and sulphur dioxide when mixed together yield

(A)Sulphur trioxide and water
(B)Sulphur and sulphuric acid
(C)Sulphur and waterCorrect
(D)Hydrogen preroxide and sulphur

Answer: (C)

Solution

H2S and SO2 undergo a comproportionation redox reaction in which sulphide (S, −2) reduces SO2 (S, +4), both being converted to elemental sulphur (S, 0): 2H2S + SO2 → 2H2O

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Question ID VK-159466