How much oxygen is needed to convert 22.4 liters of carbon monoxide CO into harmless carbon dioxide CO2?

1. Let’s write down the reaction equation:

2CO + O2 = 2CO2.

2. Find the amount of carbon monoxide (Vm – molar volume, constant equal to 22.4 l / mol):

n (CO) = V (CO) / Vm = 22.4 L / 22.4 L / mol = 1 mol.

3. According to the reaction equation, we find the amount and then the mass of oxygen:

n (O2) = 2n (CO) = 2 mol.

m (O2) = n (O2) * M (O2) = 2 mol * 32 g / mol = 64 g.

Answer: m (O2) = m (O2) =

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