Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
The arsenate is an ion with the chemical formula AsO3−4.[1] Bonding in arsenate consists of a central arsenic atom, with oxidation state +5, double bonded to one oxygen atom and single bonded to a further three oxygen atoms.[2] The four oxygen atoms orient around the arsenic atom in a tetrahedral geometry.[2] Resonance disperses the ion's −3 charge across all four oxygen atoms.
Arsenate readily reacts with metals to form arsenate metal compounds.[2][3] Arsenate is a moderate oxidizer and an electron acceptor, with an electrode potential of +0.56 V for its reduction to arsenite.[4] Due to arsenic having the same valency and similar atomic radius to phosphorus, arsenate shares similar geometry and reactivity with phosphate.[5] Arsenate can replace phosphate in biochemical reactions and is toxic to most organisms.[5][6]
^PubChem. "Arsenate ion". pubchem.ncbi.nlm.nih.gov. Retrieved 2 April 2023.
^ abc"Arsenate mineral | Britannica". www.britannica.com. Retrieved 2 April 2023.
^Waalkes, Michael P. (2019), Baan, Robert A.; Stewart, Bernard W.; Straif, Kurt (eds.), "Arsenic and metals", Tumour Site Concordance and Mechanisms of Carcinogenesis, IARC Scientific Publications, Lyon (FR): International Agency for Research on Cancer, ISBN 978-92-832-2217-0, PMID 33979075, retrieved 2 April 2023
^"P1: Standard Reduction Potentials by Element". Chemistry LibreTexts. 2 December 2013. Retrieved 29 March 2023.
^ abPollutants, National Research Council (US) Committee on Medical and Biological Effects of Environmental (1977). Chemistry of Arsenic. National Academies Press (US).
^Elias, Mikael; Wellner, Alon; Goldin-Azulay, Korina; Chabriere, Eric; Vorholt, Julia A.; Erb, Tobias J.; Tawfik, Dan S. (2012). "The molecular basis of phosphate discrimination in arsenate-rich environments". Nature. 491 (7422): 134–137. Bibcode:2012Natur.491..134E. doi:10.1038/nature11517. ISSN 1476-4687. PMID 23034649. S2CID 99851438.
The arsenate is an ion with the chemical formula AsO3−4. Bonding in arsenate consists of a central arsenic atom, with oxidation state +5, double bonded...
Synthetic arsenates include Scheele's Green (cupric hydrogen arsenate, acidic copper arsenate), calcium arsenate, and lead hydrogen arsenate. These three...
Sodium arsenate is the inorganic compound with the formula Na3AsO4. Related salts are also called sodium arsenate, including Na2HAsO4 (disodium hydrogen...
Lead hydrogen arsenate, also called lead arsenate, acid lead arsenate or LA, chemical formula PbHAsO4, is an inorganic insecticide used primarily against...
An arsenate arsenite is a chemical compound or salt that contains arsenate and arsenite anions (AsO33- and AsO43-). These are mixed anion compounds or...
Potassium arsenate usually refers to tripotassium arsenate K3AsO4 but may also refer to: Monopotassium arsenate, KH2AsO4 Dipotassium arsenate, K2HAsO4...
Calcium arsenate is the inorganic compound with the formula Ca3(AsO4)2. A colourless salt, it was originally used as a pesticide and as a germicide. It...
Chromated copper arsenate (CCA) is a wood preservative containing compounds of chromium, copper, and arsenic, in various proportions. It is used to impregnate...
Monosodium methyl arsenate (MSMA) is an arsenic-based herbicide. It is an organo-arsenate; less toxic than the inorganic form of arsenates. However, the EPA...
Aluminium arsenate is an inorganic compound with the formula AlAsO4. It is most commonly found as an octahydrate. It is a colourless solid that is produced...
Ammonium arsenate is the inorganic compound with the formula (NH4)3AsO4. It is prepared by treating a concentrated solution of arsenic acid with ammonia...
Silver arsenate is an inorganic compound with the formula Ag3AsO4. It has been used in qualitative analysis to distinguish between phosphate (Ag3PO4 is...
Neodymium arsenate, also known as neodymium(III) arsenate, is the arsenate of neodymium with the chemical formula of NdAsO4. In this compound, neodymium...
cobalt arsenate mineral with the formula Co 3(AsO 4) 2•8H 2O. Erythrite and annabergite, chemical formula Ni 3(AsO 4) 2•8H 2O, or nickel arsenate form a...
to biochemical processes that can use arsenic or its compounds, such as arsenate. Arsenic is a moderately abundant element in Earth's crust, and although...
Disodium methyl arsenate (DSMA) is the organoarsenic compound with the formula CH3AsO3Na2. It is a colorless, water-soluble solid derived from methanearsonic...
oxygen, it respires using the most oxidized form of arsenic, arsenate. It uses arsenate as its terminal electron acceptor. Arsenic is usually toxic to...
The toxic compounds in arsenic are arsenate and arsenite; each is acted upon differently by the bezoars: arsenate is removed by being exchanged for phosphate...
Praseodymium arsenate is the arsenate salt of praseodymium, with the chemical formula of PrAsO4. It has good thermal stability.[citation needed] Its ferroelectric...
component. The other sodium arsenates are NaH2AsO4 and Na3AsO4, the latter being called sodium arsenate. Disodium hydrogen arsenate is highly toxic. The salt...
Arsenate minerals usually refer to the naturally occurring orthoarsenates, possessing the (AsO4)3− anion group and, more rarely, other arsenates with anions...
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