What mass of calcium carbide is required to obtain 500 liters of acetylene?

1. Acetylene can be obtained by the interaction of calcium carbide with water:

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

2. Let’s calculate the chemical amount of the obtained acetylene:

n (C2H2) = V (C2H2): Vm = 500: 22.4 = 22.32 mol;

3. Determine the amount of calcium carbide that went into the reaction:

n (CaC2) = n (C2H2) = 22.32 mol;

4. Let’s calculate the mass of carbide:

m (CaC2) = n (CaC2) * M (CaC2);

M (CaC2) = 40 + 2 * 12 = 64 g / mol;

m (CaC2) = 22.32 * 64 = 1428.5 g.

Answer: 1428.5 g.