Arsenate

<p>The arsenate is an <a href="/facts/Ion/3bePpDna">ion</a> with the <a href="/facts/Chemical_formula/hghUtthl">chemical formula</a> AsO3−4. Bonding in arsenate consists of a central <a href="/facts/Arsenic/k1c4f44D">arsenic</a> atom, with <a href="/facts/Oxidation_state/W53W6s6V">oxidation state</a> +5, <a href="/facts/Double_bond/qDemMn0c">double bonded</a> to one oxygen atom and <a href="/facts/Single_bond/8qz02fEl">single bonded</a> to a further three <a href="/facts/Oxygen/acyn6o8r">oxygen</a> atoms. The four oxygen atoms orient around the arsenic atom in a <a href="/facts/Tetrahedral_molecular_geometry/583AL1sP">tetrahedral geometry</a>. <a href="/facts/Resonance_(chemistry)/5tymwoIP">Resonance</a> disperses the ion's −3 charge across all four oxygen atoms.
</p><p>Arsenate readily reacts with metals to form arsenate metal <a href="/facts/Arsenic_compounds/7jKFByYl">compounds</a>. Arsenate is a moderate <a href="/facts/Oxidant/1FQzB8pQ">oxidizer</a> and an <a href="/facts/Electron_acceptor/sRvhMXqH">electron acceptor</a>, with an <a href="/facts/Electrode_potential/LfPpMt0u">electrode potential</a> of +0.56 <a href="/facts/Volt/KF18MXP2">V</a> for its <a href="/facts/Reduction_potential/PqpNUgSl">reduction</a> to <a href="/facts/Arsenite/SfFCftGH">arsenite</a>. Due to arsenic having the same <a href="/facts/Valence_(chemistry)/ck7cHByj">valency</a> and similar <a href="/facts/Atomic_radii_of_the_elements_(data_page)/dvMx9hw9">atomic radius</a> to <a href="/facts/Phosphorus/27xCeIqs">phosphorus</a>, arsenate shares similar <a href="/facts/Tetrahedral_molecular_geometry/583AL1sP">geometry</a> and <a href="/facts/Reactivity_(chemistry)/PuJ2pmRT">reactivity</a> with <a href="/facts/Phosphate/FDGVCxUG">phosphate</a>. Arsenate can replace phosphate in <a href="/facts/Biochemistry/fa2pWEBp">biochemical reactions</a> and is <a href="/facts/Toxicity/qa96rs60">toxic</a> to most <a href="/facts/Organism/j8JkL09u">organisms</a>.
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Arsenate open-in-new

Arsenate