How much oxygen is required to burn 3 moles of calcium?
August 29, 2021 | education
| The amount of calcium substance is 3 mol.
Determine the amount of oxygen needed to burn calcium.
First, you need to write down the reaction equations for this reaction.
2Ca + O2 = 2CaO.
According to the reaction equation, we determine the amount of oxygen.
3 moles of calcium – x moles of oxygen.
2 mol of calcium – 1 mol of oxygen.
Let’s define the unknown value of x.
X = 1 * 3: 2 = 1.5 mol.
Next, we determine the volume of oxygen. We use the following formula.
n = V / Vm.
V = n * Vm = 1.5 mol * 22.4 l / mol = 33.6 l.
Answer: the volume of oxygen is 33.6 liters.
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