How much carbon dioxide must be passed through the calcium hydroxide solution

How much carbon dioxide must be passed through the calcium hydroxide solution to make 50 g of calcium carbonate?

1. Let’s write down the reaction equation:

Ca (OH) 2 + CO2 = CaCO3 + H2O.

2. Find the amount of calcium carbonate:

n (CaCO3) = m (CaCO3) / M (CaCO3) = 50 g / 100 g / mol = 0.5 mol.

3. According to the reaction equation, we find the amount of carbon dioxide, and then its volume (Vm – molar volume, constant equal to 22.4 l / mol):

n (CO2) = n (CaCO3) = 0.5 mol.

V (CO2) = n (CO2) * Vm = 0.5 mol * 22.4 L / mol = 11.2 L.

Answer: V (CO2) = 11.2 liters.