Calculate the amount of oxygen required to burn 93 g of phosphorus if phosphorus (V) oxide is formed?

univerkov | September 5, 2021 | education

Given:
m (P) = 93 g

Find:
V (O2) -?

1) 5O2 + 4P => 2P2O5;
2) n (P) = m / M = 93/31 = 3 mol;
3) n (O2) = n (P) * 5/4 = 3 * 5/4 = 3.75 mol;
4) V (O2) = n * Vm = 3.75 * 22.4 = 84 liters.

Answer: The O2 volume is 84 liters.

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