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The compound consists of a salt and seven molecules of water of crystallization although for simplicity the formula usually omits the water component. The other sodium arsenates are NaH 2 AsO 4 and Na 3 AsO 4, the latter being called sodium arsenate. Disodium hydrogen arsenate is highly toxic. The salt is the conjugate base of arsenic acid. It ...
Selenous acid is analogous to sulfurous acid, but it is more readily isolated. Selenous acid is easily formed upon the addition of selenium dioxide to water. As a crystalline solid, the compound can be seen as pyramidal molecules that are interconnected with hydrogen bonds. In solution it is a diprotic acid: [3] H 2 SeO 3 ⇌ H + + HSeO − 3 ...
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 ...
1-Aminocyclopropanecarboxylic acid: 22059-21-8 C 4 H 7 NO 3: aceturic acid: C 4 H 7 NO 4: aspartic acid Asp: 56-84-8 C 4 H 8: cyclobutane: 287-23-0 C 4 H 8 N 2 O 3: asparagine Asn: 70-47-3 C 4 H 8 O: tetrahydrofuran THF: 109-99-9 C 4 H 8 O 2: ethyl acetate: C 4 H 8 O 3: gamma-Hydroxybutyric acid: 591-81-1 C 4 H 9 ClHg n-Butylmercuric chloride ...
Phosphorous acid (or phosphonic acid) is the compound described by the formula H 3 PO 3. This acid is diprotic (readily ionizes two protons), not triprotic as might be suggested by this formula. Phosphorous acid is an intermediate in the preparation of other phosphorus compounds.
A polymer is a substance composed of macromolecules. The latter usually have a range of molar masses (unit g mol −1), the distributions of which are indicated by dispersity (Đ). It is defined as the ratio of the mass-average molar mass (M m) to the number-average molar mass (M n) i.e. Đ = M m /M n. [4]
Squaric acid, also called quadratic acid because its four carbon atoms approximately form a square, is a diprotic organic acid with the chemical formula C 4 O 2 (OH) 2. [4]The conjugate base of squaric acid is the hydrogensquarate anion HC 4 O − 4; and the conjugate base of the hydrogensquarate anion is the divalent squarate anion C 4 O 2− 4.
The word "litmus" comes from an Old Norse word for “moss used for dyeing”. [1] About 1300, the Spanish physician Arnaldus de Villa Nova began using litmus to study acids and bases. [2] [3] From the 16th century onwards, the blue dye was extracted from some lichens, especially in the Netherlands.
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