Answer the following :

Name the products formed when the following oxides are dissolved in water. Write a balanced equation.

a. Sulphur dioxide

b. Potassium oxide

c. Carbon dioxide

d. Calcium oxide

(a) When sulphur dioxide reacts with water then the product produced is sulphurous acid. Sulphur dioxide is present in the atmosphere and when rain occurs, it reacts with water and become sulphurous acid.

SO₂ + H₂O→ H₂SO₃

(b) When potassium oxide reacts with water then it produces potassium hydroxide.

K₂O + H₂O → 2KOH

(c) When carbon dioxide reacts with water it produces carbonic acid.

CO₂ + H₂O → H₂CO₃

(d) When calcium oxide reacts with water it produces calcium hydroxide.

CaO + H₂O → Ca(OH)₂