1.

How does SO2 react with the following? (i) Na2SO3(aq) (ii) Cl2 (iii) Fe+3ions (iv) KMnO4

Answer»

(i) Sodium sulphite (aq) reacts with So2 to form sodium hydrogen sulphite.

Na2SO3 + H2O + SO2 → 2NaHSO3

(ii) SO2 gas reacts with chlorine gas in the presence of charcoal to form suphuryl chloride.

SO2(g) + Cl2(g) → SO2Cl2(l)

(iii) Fe+3ions are reduced to Fe+2 ions by SO2

2Fe+3+ SO2 + 2H2O → 2Fe+2 + SO–24 + 4H+

(iv) SO2 gas decolourises acidified potassium permanganate

5SO2 + 2MnO4 + 2H2O → 5SO–24 + 4H++ 2Mn+2



Discussion

No Comment Found

Related InterviewSolutions