Question

draw the labelled diagram of the preparation of co2 gas and explain the procedure of how is carbon dioxide gas produced in the laboratory ​

Answer 1

Explanation:

(a) CaCO_3+2HCl\ →\ CaCl_2+CO_2+H_2OCaCO

3

+2HCl → CaCl

2

+CO

2

+H

2

O

(b)

(i) Concentrated H_2SO_4H

2

SO

4

absorbs moisture from the gas in the washer bottle.

(ii) The prepared gas is CO2 which does not collect over water because it is soluble in water.

(iii) Dilute sulphuric acid when used as a reactant with calcium carbonate forms a coating of insoluble calcium sulphate and the reaction stops after a while. CaCO_3+H_2SO_4\ →\ CaSO_4+CO_2+H_2OCaCO

3

+H

2

SO

4

→ CaSO

4

+CO

2

+H

2

O