Calculate the mass of phosphorus required to react with 56 liters of oxygen.
June 25, 2021 | education
| The synthesis reaction of phosphorus oxide is described by the following chemical reaction equation:
4P + 5O2 = 2P2O5;
4 moles of phosphorus react with 5 moles of oxygen. In this reaction, 2 moles of phosphorus oxide are synthesized.
Let’s calculate the chemical amount of a substance in oxygen with a mass of 16 grams.
To do this, divide the volume of oxygen by the volume of 1 mole of gas.
N O2 = 56 / 22.4 = 2.5 mol;
With this amount of oxygen, 2.5 / 5 x 4 = 2 mol of phosphorus will react.
Let’s calculate its weight.
M P = 31 grams / mol;
m P = 2 x 31 = 62 grams;
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