Write the equation for the reaction of phosphorus combustion (this produces phosphorus oxide (V) P2O5)

Write the equation for the reaction of phosphorus combustion (this produces phosphorus oxide (V) P2O5) and calculate whether 10 g of oxygen is enough to burn 6.2 g of phosphorus

The equation for the reaction of phosphorus with oxygen:

4P + 5O2 = 2P2O5

Taken amount of phosphorus substance:

v (P) = m (P) / M (P) = 6.2 / 31 = 0.2 (mol).

Taken amount of oxygen substance:

v (O2) = m (O2) / M (O2) = 10/32 = 0.3125 (mol).

According to the reaction equation, 4 mol of phosphorus reacts with 5 mol of oxygen, so the amount of oxygen required for the complete oxidation of phosphorus is:

v (O2) = v (P) * 5/4 = 0.2 * 5/4 = 0.25 (mol), which is less than the amount of oxygen taken.

The answer is enough.