(i)

When ammonia reacts with hydrochloric acid, it forms ammonium chloride and water.

(ii)

When copper carbonate reacts with sulphuric acid, it forms copper sulphate, carbon dioxide and water.

(iii)

When sodium hydroxide reacts with hydrochloric acid, it forms sodium chloride and water.

(iv)

When magnesium hydroxide (milk of magnesia) reacts with nitric acid, it forms magnesium nitrate and water.

(v)

When potassium hydroxide reacts with sulphuric acid, it forms potassium sulphate and water.

(vi)

When calcium hydroxide reacts with nitric acid, it forms calcium nitrate and water.