# Calculate the mass of phosphorus oxide that is formed as a result of the reaction of phosphorus

Calculate the mass of phosphorus oxide that is formed as a result of the reaction of phosphorus with oxygen of 4.48 liters.

The oxidation reaction of phosphorus with oxygen is described by the following chemical reaction equation:

2P + 5/2 O2 = P2O5;

2.5 moles of oxygen are reacted with 2 moles of phosphorus. 1 mol of its oxide is synthesized.

Let’s calculate the available chemical amount of oxygen.

1 mole of ideal gas fills a volume of 22.4 liters under normal conditions.

N O2 = 4.48 / 22.4 = 0.2 mol;

In this reaction, 0.2 x 5/2 = 0.5 mol of phosphorus oxide is synthesized.

Let’s calculate its weight.

M P2O5 = 31 x 2 + 16 x 5 = 142 grams / mol;

m P2O5 = 142 x 0.5 = 71 grams; One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.