is conjugate acid of is conjugate base of arsenate ion arsenate(3-) arsenate(2-) 139.909 139.92710 An arsenate ion resulting from the removal of two protons from arsenic acid. AsHO4 CHEBI:48597 DJHGAFSJWGLOIV-UHFFFAOYSA-L Gmelin:2292 HAsO4(2-) InChI=1S/AsH3O4/c2-1(3,4)5/h(H3,2,3,4,5)/p-2 MetaCyc:ARSENATE O[As]([O-])([O-])=O [AsO3(OH)](2-) arsenate chebi_ontology hydrogen arsenate hydroxidotrioxidoarsenate(2-) arsenate(1-)