Which of the following reactions is sulphur (IV) oxidizing agent?

Which of the following reactions is sulphur (IV) oxidizing agent?

A 2HNO _3(aq) + SO_2(g) â†’ H₂SO_4(aq) + 2NO_2(g)
B 2KMnO _4(aq) + 5SO_2(g) + 2H₂O â†’ K₂SO_4(aq) +MnSO_4(aq) 2H₂SO_4(aq)
C FeCI_3(aq) + SO_2(g) + 2H₂O_(l) â†’ FeCI _2(g)+ 2HCI_(g) + H₂SO_4(aq)
D 2H₂S_(g) + SO_2(g) â†’2H₂O_(l) + 3S_(s)

waec 2005 chemistry

The correct answer is B. 2KMnO _4(aq) + 5SO_2(g) + 2H₂O â†’ K₂SO_4(aq) +MnSO_4(aq) 2H₂SO_4(aq)

It also reduces potassium permanganate and dichromate to Mn2+ and Cr3+ respectively.

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