The synthesis reaction of pentavalent phosphorus oxide is described by the following chemical reaction equation:
4P + 5O2 = 2P2O5;
4 phosphorus atoms interact with 5 oxygen molecules. During the reaction, 2 molecules of pentavalent phosphorus oxide are synthesized.
Let’s calculate the chemical amount of a substance contained in phosphorus weighing 62 grams.
M P = 31 grams / mol;
N P = 62/31 = 2 mol;
2 moles of phosphorus will react with 2 x 5/4 = 2.5 moles of oxygen.
The oxygen weight will be:
M O2 = 16 x 2 = 32 grams / mol;
m O2 = 2.5 x 32 = 80 grams;
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