What mass of phosphorus oxide reacted with water if, as a result of such a reaction
| September 24, 2021 | education
What mass of phosphorus oxide reacted with water if, as a result of such a reaction, metaphosphoric acid was formed in an amount of 2.5 mol?
P2O5 + H2O = 2HPO3
There is 1 mole of phosphorus oxide P2O5 per mole of HPO3 acid.
The amount of substance is equal.
n (P2O5) = ½ n (HPO3) = 2.5: 2 = 1.25 mol.
Let’s find the mass of P2O5.
M (P2O5) = 142 g / mol.
m = n × M.
m = 142 g / mol × 1.25 mol = 177.5 g.
Answer: 177.5 g.
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