Question

A metal carbonate 'x' on reacting with acid give a product 'y' which when passed through a aqueous solution of 'z' to give back 'x'.

[1] write the chemical equation involved
[2]identify
X:
Y:

Z:

Answer 1

[1] CaCO3 + 2HCl = CaCl2 + CO2 + H2O

[2] X = CaCO3

Y = CO2

Z= Ca(OH)2

Ca(OH)2 + CO2 = CaCO3 + H2O

Answer 2

[1] CaCO3 + 2HCl = CaCl2 + CO2 + H2O

[2] X = CaCO3

Y = CO2

Z= Ca(OH)2

Ca(OH)2 + CO2 = CaCO3 + H2O