Which of the following, in clear solution, forms a white precipitate when carbon (IV) oxide is bubbled into it for a short time?
a
KOH
b
NaOH
c
Ca(OH)2
d
AI(OH)3
Explanation
Correct Option
cNo explanation available
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joanj
2 years ago
The correct answer is:
C. Ca(OH)2
When carbon(IV) oxide (CO2) is bubbled into a clear solution of calcium hydroxide (Ca(OH)2), a white precipitate of calcium trioxocarbonate(IV) (CaCO3) forms. This reaction occurs because carbon(IV) oxide (CO2) reacts with calcium hydroxide to produce calcium trioxocarbonate(IV) and water:
Ca(OH)2 + CO2 → CaCO3↓ + H2O
