# Calcium carbide CaC2 contains 25.8% impurities. how much acetylene can be obtained from 15 kg of such carbide?

The reaction for producing acetylene from calcium carbide is described by the following chemical equation:

CaC2 + 2H2O = C2H2 + Ca (OH) 2;

From 1 mole of calcium carbide, 1 mole of acetylene is synthesized.

Let’s calculate the available chemical amount of silicon carbide substance.

M CaC2 = 40 + 12 x 2 = 64 grams / mol;

N CaC2 = 15000 x 0.742 / 64 = 173.9 mol;

The same molar amount of gaseous acetylene will be synthesized.

Let’s calculate its volume. To do this, multiply the amount of the substance and the standard volume of 1 mole of gaseous substance (22.4 liters).

V C2H2 = 173.9 x 22.4 = 3896 liters;

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