Bubbling of carbon (IV)oxide into calcium hydroxide solution results in the formation of
A
CaCO3
B
CuCO3
C
ZnCO3
D
Na2CO3
E
MgCO3
Verified Correct Answer: A.
Chemical Principles & Mechanism
When carbon (IV) oxide (CO\(_2\)) is bubbled into a calcium hydroxide solution (Ca(OH)\(_2\)), also known as limewater, it reacts to form calcium carbonate (CaCO\(_3\)) and water (H\(_2\)O). Calcium carbonate is an insoluble white precipitate, which causes the clear limewater to turn "milky" or cloudy.
Source: Myschool Past Questions Archive (Record #36039)