2. Calcium carbide, CaC2, used to produce acetylene, C2H2, is prepared by heatin

Question

2. Calcium carbide, CaC2, used to produce acetylene, C2H2, is prepared by heating calcium oxide and
carbon to high temperature. Carbon monoxide gas is formed as a by-product.
a. Write down the balanced equation for this process.
b. If a mixture contains 1.15 kg of each reactant, how many grams of calcium carbide can be
prepared?

Explanation / Answer

a) CaO + 3C ---> CaC2 + CO b) 1.15 kg C means 1150/12 = 95.833 1.15 kg CaO means 1150/56 = 20.5357 moles CaO is limiting reagent 20.5357 moles CaO produces 20.5357 moles CaC2 = 20.5357 x64.099 = 1316.3 gms Calcium Carbide

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