What is the chemical formula for diphosphorus pentoxide? Select one: a. P4O3 b. P2O5 c. P2O4 d. PO3 e. P2O
The Correct Answer and Explanation is:
The correct chemical formula for diphosphorus pentoxide is b. P2O5.
Explanation:
The name “diphosphorus pentoxide” provides important clues about the composition of the compound:
- Di- indicates the presence of two phosphorus (P) atoms.
- Penta- refers to the number five, indicating five oxygen (O) atoms.
Thus, combining these two pieces of information, we get the formula P2O5.
Further Details:
Diphosphorus pentoxide is a common molecular compound, especially in chemistry related to phosphorus compounds. It is often used in the manufacture of phosphoric acid and can be produced by the combustion of phosphorus in excess oxygen. When phosphorus burns in oxygen, it forms P4O10, which can further break down into P2O5 under certain conditions.
The compound is highly hygroscopic (it absorbs moisture from the air) and reacts vigorously with water to form phosphoric acid (H3PO4). It is also known for its strong oxidizing properties.
In summary:
- P2O5 represents two phosphorus atoms and five oxygen atoms, perfectly matching the molecular description for “diphosphorus pentoxide.”
