Chemistry · Chemical Reactions and Equations
A solution of substance X is used for whitewashing walls. Substance X reacts slowly with carbon dioxide (CO2) in the air to form a thin, shiny layer of compound Y on the walls. Identify X and Y.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1CaCO3, CaCO3
- 2Ca(OH)2, CaCO3✓
- 3CaCO3, Ca(OH)2
- 4CaO, Ca(OH)2
Correct answer
Ca(OH)2, CaCO3
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