| Oxygen difluoride | |
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| Other names | difluorine monoxide fluorine monoxide oxygen difluoride oxygen fluoride hypofluorous anhydride |
| Identifiers | |
| CAS number | [7783-41-7] |
| Properties | |
| Molecular formula | OF2 |
| Molar mass | 53. CAS registry numbers are unique numerical identifiers for Chemical compounds Polymers biological sequences mixtures and Alloys They are also referred to A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes Molar mass, symbol M, is the Mass of one mole of a substance ( Chemical element or Chemical compound) 9962 g mol−1 |
| Melting point |
−224 °C |
| Boiling point |
−145 °C |
| Solubility in other solvents | 68 mL gaseous OF2 in 1 L (0 °C)[1] |
| Thermochemistry | |
| Std enthalpy of formation ΔfH |
24. The melting point of a solid is the temperature range at which it changes state from solid to Liquid. The boiling point of a liquid is the temperature at which the Vapor pressure of the liquid equals the environmental pressure surrounding the liquid Solubility is the characteristic Physical property referring to the ability of a given substance the Solute, to dissolve in a Solvent. The standard enthalpy of formation or "standard heat of formation" of a compound is the change of Enthalpy that accompanies the formation of 1 mole of a 5 kJ mol−1 |
| Related compounds | |
| Related compounds | O2F2 NHF2 NF3 SCl2 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Oxygen difluoride is the chemical compound with the formula OF2. Dioxygen difluoride is a compound with the formula O2F2 This yellow compound is a strong oxidant and decomposes into OF2 and oxygen Nitrogen trifluoride is the Inorganic compound with the formula NF3 Sulfur dichloride is the Chemical compound with the formula SCl2 In Chemistry, the standard state of a material is its state at 1 bar (100 Kilopascals exactly A chemical compound is a substance consisting of two or more different elements chemically bonded together in a fixed proportion by Mass. A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes As predicted by VSEPR theory, the molecule adopts a bent structure like H2O, but it has very different properties, being a strong oxidant. Valence shell electron pair repulsion (VSEPR theory (1957 is a model in Chemistry, which is used for predicting the shapes of individual Molecules based Water is a common Chemical substance that is essential for the survival of all known forms of Life. An oxidizing agent or oxidising agent (also called an oxidant, oxidizer or oxidiser) can be defined as either a Chemical compound
Contents |
Preparation
Oxygen difluoride was first reported in 1929; it was obtained by the electrolysis of molten potassium fluoride and hydrofluoric acid containing small quantities of water. Potassium fluoride is the Chemical compound with the formula KF Hydrofluoric acid is a Solution of Hydrogen fluoride in Water. Water ( H2[[oxygen O]] H OH) is the most abundant Molecule on Earth 's surface composing of about 70% of the Earth's surface as [2][3] The modern preparation entails the reaction of fluorine with a dilute aqueous solution of sodium hydroxide:
- 2F2 + 2NaOH → OF2 + 2NaF + H2O
Reactions
Its powerful oxidizing properties are suggested by the oxidation number of +2 for the oxygen atom, which is unusual. Fluorine, fluorum meaning "to flow" is the Chemical element with the symbol F and Atomic number 9 Sodium hydroxide ( Na[[hydroxide OH]]) also known as Lye, caustic soda and (incorrectly according to IUPAC nomenclature Sodium fluoride is the Chemical compound with the formula NaF The oxidation number of a central atom in a coordination compound is the charge that it would have if all the Ligands were removed along with the Electron pairs Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the Above 200 °C, OF2 decomposes to oxygen and fluorine via a radical mechanism. In Chemistry, radicals (often referred to as free radicals) are atoms molecules or ions with Unpaired electrons on an otherwise Open shell
OF2 reacts with many metals to yield oxides and fluorides. An oxide is a Chemical compound containing at least one Oxygen atom as well as at least one other element Fluoride is the reduced form of Fluorine. Both organic and Inorganic compounds containing the element fluorine are considered fluorides Nonmetals also react: phosphorus reacts with OF2 to form PF5 and POF3; sulfur gives SO2 and SF4; and unusually for a noble gas, xenon reacts, yielding XeF4 and xenon oxyfluorides. Nonmetal is a term used in Chemistry when classifying the Chemical elements On the basis of their general physical and chemical properties every element in the Phosphorus, (ˈfɒsfərəs is the Chemical element that has the symbol P and Atomic number 15 Phosphorus pentafluoride, P[[fluorine F5]] is a phosphorus halide. Sulfur or sulphur (ˈsʌlfɚ see spelling below) is the Chemical element that has the Atomic number 16 Sulfur tetrafluoride is the Chemical compound with the formula SF4 History Noble gas is translated from the German noun de ''Edelgas'' first used in 1898 by Hugo Erdmann to indicate their extremely low level of reactivity Xenon (ˈzɛnɒn or) is a Chemical element represented by the symbol Xe. Xenon tetrafluoride, Xe[[Fluorine F4]] is one of the chemical compounds derived from the Noble gas xenon
Oxygen difluoride reacts very slowly with water to form hydrofluoric acid:
- OF2(aq) + H2O(aq) → 2HF(aq) + O2(g)
Popular culture
In Robert L. Forward's science fiction novel Camelot 30K, oxygen difluoride was used as a biochemical solvent by fictional life forms living in the solar system's Kuiper belt. Hydrofluoric acid is a Solution of Hydrogen fluoride in Water. This is about the physicist and science fiction writer You may be looking for his son Robert D Camelot 30K is a Hard science fiction novel written by the United States Physicist Robert L The Kuiper belt (ˈkaɪpɚ to rhyme with "viper" sometimes called the Edgeworth-Kuiper belt, is a region of the Solar System beyond the planets extending
Safety
OF2 is a dangerous chemical, as is the case for any strongly oxidizing gas.
References
- ^ Yost, D. M. "Oxygen Fluoride" Inorganic Syntheses, 1939 volume, 1, pages 109-111.
- ^ Paul Lebeau; Damiens, A. "A New Method for the Preparation of the Fluorine Oxide”Compt. rend. 1929, volume 188, 1253-5.
- ^ Lebeau, P. ; Damiens, A. "The Existence of an Oxygen Compound of Fluorine"Compt. rend. 1927, volume 185, pages 652-4.
External links
Dictionary
oxygen difluoride
-noun
- (chemistry) a binary compound of oxygen and fluorine, OF2; a powerful oxidizing agent