What amount of phosphorus (V) oxide is formed by the interaction of phosphorus with oxygen
September 24, 2021 | education
| What amount of phosphorus (V) oxide is formed by the interaction of phosphorus with oxygen, with a volume of 5.6 liters.
1. Let’s write down the reaction equation:
4P + 5O2 = 2P2O5.
2. Find the amount of oxygen (Vm – molar volume, constant equal to 22.4 l / mol):
n (O2) = V (O2) / Vm = 5.6 L / 22.4 L / mol = 0.25 mol.
3. According to the reaction equation, we find the amount of phosphorus oxide formed:
2n (P2O5) = 5n (O2).
n (P2O5) = 2.5n (O2) = 2.5 * 0.25 mol = 0.625 mol.
Answer: n (P2O5) = 0.625 mol.
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