This species also behaves as a "superbase" considered even stronger than the sodium hydride compound Furthermore, it has the character of a donor of hydride ions. In the same way, it is considered a fairly corrosive substance, which also manifests a violent reaction when it comes into contact with acidic compounds, interacting in a quantitative relationship. Instead, it is insoluble in solvents of organic origin such as diethyl ether, benzene or carbon disulfide. Regarding its solubility, this hydride is considered soluble in molten hydroxides (such as fused sodium hydroxide), as well as in saline mixtures. In this sense, it is also known that this compound has pyrophoric properties that is, it can ignite spontaneously in the presence of air, as well as oxidizing agents and certain gases.įor this reason, it should be treated with caution and contained as a suspension in a mineral oil or even paraffin wax, thus reducing its pyrophoricity and facilitating its handling. In addition, its density is 1.43 g / cm 3 (taking as a reference point that of water under standard conditions, which is 1.00 g / cm 3). This compound has a molar mass of approximately 40.106 g / mol due to the combination of the molar masses of its two components. The hydride ion behaves like a strong Brønsted base that is, it readily adopts protons from a donor substance such as metallic potassium, which receives them. Depending on their structure and characteristics, these substances can be of three classes: ionic, covalent or interstitial hydrides.īy having the nature of an ionic compound, potassium hydride is made up of an anion (in this case, the hydride ion H –) and a cation (the potassium ion K +). Hydrides are chemical compounds made up of hydrogen and one or more other elements, metallic or non-metallic in nature. Like all other hydrides of this type, it is a solid compound, which has a high melting point as occurs with all ionic molecules. The potassium hydride It is a chemical compound of ionic type formed by the direct combination of hydrogen in its molecular form and the alkali metal potassium. Video: What Are Metallic Bonds | Properties of Matter | Chemistry | FuseSchool Content
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