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The Essequibo River (Spanish: Río Esequibo; originally called by Alonso de Ojeda; Río Dulce) [7] [8] is the largest river in Guyana, and the largest river between the Orinoco and Amazon. Rising in the Acarai Mountains near the Brazil–Guyana border , the Essequibo flows to the north for 1,014 km (630 mi) through forest and savanna into the ...
Guyana–Venezuelaterritorial dispute. The Guyana–Venezuela territorial dispute is an ongoing territorial dispute between Guyana and Venezuela over the Essequibo region, also known as Esequibo or Guayana Esequiba in Spanish (Spanish pronunciation: [ɡwaˈʝana eseˈkiβa] ⓘ), [1] a 159,500 km 2 (61,600 sq mi) area west of the Essequibo River.
Water chemistry analyses are carried out to identify and quantify the chemical components and properties of water samples. The type and sensitivity of the analysis depends on the purpose of the analysis and the anticipated use of the water. Chemical water analysis is carried out on water used in industrial processes, on waste-water stream, on ...
Essequibo was founded by colonists from the first Zeelandic colony, Pomeroon conquered in 1581, which had been destroyed by Spaniards and local warriors around 1596. Led by Joost van der Hooge, the Zeelanders founded Fort Kyk-Over-Al in the Essequibo river (actually a side-river called the Mazaruni). This location was chosen because of its ...
Water is the chemical substance with chemical formula H 2 O; one molecule of water has two hydrogen atoms covalently bonded to a single oxygen atom. [25] Water is a tasteless, odorless liquid at ambient temperature and pressure. Liquid water has weak absorption bands at wavelengths of around 750 nm which cause it to appear to have a blue color. [3]
e. The self-ionization of water (also autoionization of water, autoprotolysis of water, autodissociation of water, or simply dissociation of water) is an ionization reaction in pure water or in an aqueous solution, in which a water molecule, H 2 O, deprotonates (loses the nucleus of one of its hydrogen atoms) to become a hydroxide ion, OH −.
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
e. Acid–base extraction is a subclass of liquid–liquid extractions and involves the separation of chemical species from other acidic or basic compounds. [1] It is typically performed during the work-up step following a chemical synthesis to purify crude compounds [2] and results in the product being largely free of acidic or basic impurities.