Calcium carbide interacts with water to form acetylene and calcium hydroxide.
CaC2 + 2H2O = Ca (OH) 2 + C2H2.
Acetylene burns to form carbon monoxide (IV) and water.
2C2H2 + 5O2 = 4 CO2 + 2H2O.
We obtain calcium carbonate by composing the reaction equation between calcium oxide and carbon monoxide (IV).
CaO + CO2 = Ca CO3.
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