Calculate the mass of chlorine that can add to 5 liters of acetylene.

We draw up the reaction equation and arrange the coefficients in it: C2H2 + Cl2 = C2H2Cl2.
1) Find the amount of the substance acetylene (ethyne). For this, the volume of ethine is divided by the molar volume: 5 / 22.4 = 0.22 mol.
2) According to the reaction equation, there is one mole of chlorine for one mole of acetylene. This means that the amount of chlorine substance is 0.22 mol.
3) Molar mass of chlorine: 2 * 35.5 = 71.
4) Chlorine mass: 71 * 0.22 = 15.62 g – answer.