Question

Explain the action of carbon dioxide on following
solutions when
(a) carbon dioxide is passed in limited amount
(b) carbon dioxide is passed in excess amount
(i) Sodium hydroxide solution
(ii) Limewater (calcium hydroxide solution)​

Answer 1

Answer:

a) When the limited supply of Co2 is passed through lime water- it reacts and forms calcium carbonate which is insoluble in water and thereby the solution becomes turbid or forms a milky white precipitate.

Answer 2

Explanation:

a) when a small amount of carbon dioxide is passed through sodium hydroxide solution it reacts to form sodium carbonate. The solution remains clear as sodium carbonate is soluble in water.

2HaOH + CO2. - Na2CO3. + H2O

sodium. Carbon dioxide sodium. water

carbonate

hydroxide