Arsenic acid
Arsenic acid is an inorganic oxoacid of arsenic(V) with formula H₃AsO₄. Its salts are called arsenates.
Arsenate: Arsenate is the anion AsO₄³⁻ and the name for salts containing arsenic(V) oxyanions. Arsenic acid loses three protons to form the arsenate ion.
Oxidation state: Oxidation state is a bookkeeping value representing an atom's electron ownership in a chemical species. Assigning arsenic an oxidation state of +5 distinguishes this acid from arsenous acid.
Chromated copper arsenate: Chromated copper arsenate is a wood preservative formulation containing chromium, copper, and arsenic compounds. Its arsenic component is commonly applied as arsenate derived from arsenic acid.
Phosphoric acid: Phosphoric acid is the phosphorus(V) oxoacid H₃PO₄, whose salts are phosphates. It is arsenic acid's phosphorus analogue, with phosphorus replacing arsenic.
Acid dissociation constant: An acid dissociation constant quantifies the equilibrium between an acid and its conjugate base in solution. Its successive ionizations are described by three acid dissociation constants.
Oxoacid: An oxoacid is an acid containing oxygen, hydrogen, and another element, with acidic hydrogen often bonded through oxygen. Arsenic acid belongs to this broad structural family.
Lead arsenate: Lead arsenate is a family of lead salts formerly used as insecticides in agriculture. It is a historically significant arsenate made using arsenic(V) chemistry.
Arsenic trioxide: Arsenic trioxide is an inorganic arsenic(III) oxide with formula As₂O₃. It is a common arsenic(III) compound, distinct from arsenic(V) acid.
Arsenous acid: Arsenous acid is an arsenic(III) oxoacid, commonly represented as H₃AsO₃ in aqueous chemistry. It contains arsenic(III), unlike arsenic acid's arsenic(V).
Arsenic: Arsenic is a metalloid chemical element with atomic number 33 and several oxidation states. Its +5 oxidation state forms the central atom in arsenic acid.