Question

Translate the following statements into chemical equations and then balance

them.

a) Hydrogen gas combines with nitrogen to form ammonia.

b) Hydrogen sulphide gas burns in air to give water and sulphur-di-oxide.

c) Barium chloride reacts with Aluminium sulphate to give Aluminium

chloride and a precipitate of Barium sulphate.

d) Potassium metal reacts with water to give potassium hydroxide and

hydrogen gas. ​

Answer 1

Explanation:

a) H2 + N2 ----> NH3

Balance:

• 3H2 + N2 ----> 2NH3

b) H2S + O2 ----> H2O + SO2

Balance:

• 2H2S + 3O2 ----> 2H2O + 2SO2

c) Bacl2 + Al2(SO4)3 ----> AlCl3 + BaSO4

Balance:

• 3BaCl2 + Al2(SO4)3 ----> 2AlCl3 + 3BaSO4

d) K + H20 ----> KOH + H2

Balance:

• 2K + 2H2O ----> 2KOH + H2