Which of the following reactions is sulphur (IV) oxidizing agent?
A.
2HNO 3(aq) + SO2(g) → H2SO4(aq) + 2NO2(g)
B.
2KMnO 4(aq) + 5SO2(g) + 2H2O → K2SO4(aq) +MnSO4(aq) 2H2SO4(aq)
C.
FeCI3(aq) + SO2(g) + 2H2O(l) → FeCI 2(g)+ 2HCI(g) + H2SO4(aq)
D.
2H2S(g) + SO2(g) →2H2O(l) + 3S(s)
Correct answer is B
It also reduces potassium permanganate and dichromate to Mn2+ and Cr3+ respectively.
