What mass of calcium carbide is required to obtain 500 liters of acetylene?
February 23, 2021 | education
| 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.
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