What is the volume of carbon dioxide formed when calcining a 10 g CaCO3 salt?

1. Let’s write down the reaction equation:

CaCO3 = CaO + CO2.

2. Find the amount of calcium carbonate:

n (CaCO3) = m (CaCO3) / M (CaCO3) = 10 g / 100 g / mol = 0.1 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) = 0.1 mol.

V (CO2) = n (CO2) * Vm = 0.1 mol * 22.4 l / mol = 2.24 l.

Answer: V (CO2) = 2.24 l.

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