When 1 kg of technical calcium carbide interacts with water, 300 liters of acetylene are obtained.

When 1 kg of technical calcium carbide interacts with water, 300 liters of acetylene are obtained. Mass fraction of mixtures in calcium carbide is?

CaC2 + 2H2O = C2H2 + Ca (OH) 2
n (C2H2) = 300 / 22.4 = 13.4 mol
n (pure CaC2) = 13.4 mol
m (pure CaC2) = 13.4 * 64 = 857.6 G
mass fraction is 857.6 / 1000 = 85.76%



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