The coefficient of oxygen in the reaction P + O2 → P2O3 is 1. This means that one molecule of oxygen (O2) reacts with one molecule of phosphorus (P) to form one molecule of phosphorus oxide (P2O3).
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The percent composition of P2O3 (diphosphorus trioxide) is 56.38% phosphorus (P) and 43.62% oxygen (O). This means that in a sample of P2O3, 56.38% of the mass is due to phosphorus atoms, while 43.62% is due to oxygen atoms.
The formula for diphosphorus trioxide is P2O3. It is formed by the direct combination of phosphorus (P) and oxygen (O) in a 2:3 ratio. This means that two phosphorus atoms react with three oxygen atoms to form one molecule of diphosphorus trioxide.
The oxidation number of P in P2O3 is +3. This is because the combined oxidation numbers of the three oxygen atoms (-2 each) and the two phosphorus atoms must add up to the overall charge of the compound, which is zero.
The Lewis structure for P2O3 consists of a phosphorus atom bonded to another phosphorus atom through a double bond, and each phosphorus atom is also bonded to three oxygen atoms. Each oxygen atom is connected to one phosphorus atom through a single bond. This results in a trigonal planar shape for each phosphorus atom.
There are 24 valence electrons in the Lewis structure of PO3. Each oxygen contributes 6 valence electrons, and phosphorus contributes 5 valence electrons.