1.

Give balanced chemical equations for the following reactions: (i) Fluorine is passed through a cold, dilute NaOH solution.(ii) Hydrogen peroxide is treated with acidified KMnO4 solution.(iii) Sulphuric acid is treated with hydrogen sulphide.

Answer»

(i) Fluorine is passed through a cold, dilute NaOH solution.

2NaOH + 2F2 → OF2 + 2NaF + H2O

(ii) Hydrogen peroxide is treated with acidified KMnO4 solution.

2KMnO4 + 3H2SO4 + 5H2O2 → k2SO2 + 2MnSO2 + 8H2O + 5O2

(iii) Sulphuric acid is treated with hydrogen sulphide.

2KMnO4 + 3H2SO4 + 5H2S → k2SO4 + 2MnSO+ 8H2O + 5S



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