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Powdered potassium sulfide anhydrous. Potassium sulfide is an inorganic compound with the formula K 2 S.The colourless solid is rarely encountered, because it reacts readily with water, a reaction that affords potassium hydrosulfide (KSH) and potassium hydroxide (KOH).
[1] [2] [3] Introduced by Gilbert N. Lewis in his 1916 article The Atom and the Molecule, a Lewis structure can be drawn for any covalently bonded molecule, as well as coordination compounds. [4] Lewis structures extend the concept of the electron dot diagram by adding lines between atoms to represent shared pairs in a chemical bond.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Dot_and_cross_diagram&oldid=50266000"
English: The crystal structure of sodium chloride, NaCl, a typical ionic compound. The __ purple spheres represent sodium cations, Na +, and the __ green spheres represent chloride anions, Cl −. The yellow stipples represent the electrostatic force in each ionic bond.
The term alcohol originally referred to the primary alcohol ethanol (ethyl alcohol), which is used as a drug and is the main alcohol present in alcoholic drinks. The suffix -ol appears in the International Union of Pure and Applied Chemistry (IUPAC) chemical name of all substances where the hydroxyl group is the functional group with the ...
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
English: This is a diagram showing the formation of a secondary alcohol via reduction and hydration. The drawing was done in ACD/ChemSketch v12.01 (using standard ACS structure drawing style) and exported as a Windows Metafile (WMF). The image was converted to SVG using Inkscape v0.48.1 to yield a vector graphics version.
Daten aus / data from van Rossen, G.L.C.M.; van Bleiswijk, H.: Über das Zustandsdiagramm der Kalium-Natriumlegierungen in Z. Anorg. Chem. 74 (1912) 152-156 Legende: Na - Schmelzpunkt von reinem Natrium, K - Schmelzpunkt von reinem Kalium, E - Eutektikum, P - Peritektikum, blaue Linie - Schmelzpunkt der eutektischen Mischung, schwarze Linie - inkongruente Schmelze der Verbindung Na 2 K, rote ...