C) CaCO₃ ⇒CaO + CO₂ produces gas (CO₂) that turns lime water (Ca(OH)₂) milky
Further explanation
Calcium hydroxide Ca (OH)₂ is one of the bases obtained from the reaction between lime dissolved in water
CaO + H₂O ⇒ Ca (OH)₂
When the CO₂ gas reacts with Ca (OH)₂, the solution will become turbid due to a reaction to the formation of calcium carbonate deposits
Ca (OH)₂(aq) + CO₂ (g) ⇒ CaCO₃ (s) + H₂O (l)
CaCO₃ (s) itself will undergo a decomposition reaction
CaCO₃ ⇒ CaO + CO₂
so that cycles can occur
Learn more
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