# How many liters of acetylene under normal conditions can be obtained from 1 kg

September 20, 2021 | education

| **How many liters of acetylene under normal conditions can be obtained from 1 kg of technical calcium carbide containing 30 percent of impurities?**

Acetylene is synthesized by the interaction of calcium carbide with water.

CaC2 + 2H2O = Ca (OH) 2 + C2H2 ↑;

Let’s calculate the molar amount of calcium carbide.

To do this, let’s summarize the molar weights of the elements that make up this molecule.

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

N CaC2 = 1000 x 0.7 / 64 = 10.9375 mol;

Theoretically, the same amount of acetylene will be obtained.

Let’s define its volume. For this purpose, we multiply the molar amount of the substance by the volume of 1 mole of the substance (which is 22.4 liters).

V C2H2 = 10.9375 x 22.4 = 245 liters;

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