Carbon dioxide was passed through 50 g of a solution with a mass fraction of calcium hydroxide of 20%

Carbon dioxide was passed through 50 g of a solution with a mass fraction of calcium hydroxide of 20% until calcium carbonate was formed. Calculate the volume of the reacted gas.

1) find the mass of Ca (OH) 2: m = (50/100) * 20 = 10 g;
2) find the number of mol Ca (OH) 2 (M = 74 g / mol): n = 10/74 = 0.14 mol;
3) n (Ca (OH) 2) = n (CO2) = 0.14 mol;
4) find the volume of CO2 at standard conditions. (Vm = 22.4 l / mol): V = 0.14 * 22.4 = 3.14 l;
Answer: 3.14 L