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P2H4 – Diphosphine Definition
1.1 Names
1.1.1 Common name: Diphosphine
1.1.2 English name: Diphosphine
1.2. Atomic composition: Diphosphine has the chemical formula P2H4, consisting of 2 phosphorus atoms and 4 hydrogen atoms.
1.3. Atomic mass: According to the periodic table, the mass of phosphorus is 31 and hydrogen is 1, hence the atomic mass of P2H4 is 66.
1.3.1 Molecular structure: The diphosphine molecule consists of 2 phosphorus atoms and 4 hydrogen atoms.
1.4 Ion structure: Diphosphine does not form ions as it is a non-ionizing substance. -
Properties of P2H4
2.1 Physical properties of P2H4
State: Diphosphine molecules are in gaseous state under standard conditions.
Color: Diphosphine is colorless.
Smell: Diphosphine has a rather distinctive, unpleasant odor.
PH Level: Diphosphine is a neutral substance, not affecting the pH level.
2.2 Chemical properties of P2H4: Diphosphine is highly flammable in air, forming P4O10 and H2O. -
Common chemical equations of P2H4: P2H4 + 4O2 -> P4O10 + 2H2O
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Preparation of P2H4
4.1 Laboratory preparation of P2H4: Diphosphine can be prepared from phosphine (PH3) through the process of oxidation.
4.2 Industrial preparation of P2H4: Industrially, diphosphine is prepared from phosphine and hydrogen under high pressure and high temperature.