What is the function of sulphur (IV) oxide in the reaction represented by the following equation? SO2(aq) + 2H2S(g) → 3S (s) + 2H2O (l)

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A. Dehydrating agent
B. Oxidising agent
C. Bleaching agent
D. Acid
E. Precipitant

Correct Answer:

Option B – Oxidising agent

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