Fluorine is passed through a cold, dilute NaOH solution.

Question

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 1

(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 + 2MnSO₄ + 8H₂O + 5S