Some articles on arsenate ion:
Arsenate - Ions
... weakly acidic conditions it exists as dihydrogen arsenate ion, H2AsO4− in weakly basic conditions it exists as hydrogen arsenate ion HAsO42− and finally, in strongly basic ...
... weakly acidic conditions it exists as dihydrogen arsenate ion, H2AsO4− in weakly basic conditions it exists as hydrogen arsenate ion HAsO42− and finally, in strongly basic ...