1.

Give balanced chemical equations for the following reactions: (i) Fluorine treated with dilute sodium hydroxide reactions.(ii) Hydrogen sulphide treated with concentrated sulphuric acid.(iii) Potassium iodide treated with acidified potassium permanganate solution.

Answer»

(i) Fluorine treated with dilute sodium hydroxide reactions.

2F2 + 2NaOH → 2NaF + H2O + OF2

(ii) Hydrogen sulphide treated with concentrated sulphuric acid.

H2S + H2SO4(conc) → S + SO2 + 2H2O

(iii) Potassium iodide treated with acidified potassium permanganate solution.

2KMnO4 + 8H2SO4 + 10KI → 6K2SO4 + 2MnSO4 + 8H2O + 5I2



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