What is the anion found in phosphoric acid?
Answer: Phosphate ions\((PO_4^{3-})\)
Explanation: Phosphoric acid is an acid as it donates \(H^{+}\) ions when dissolved in water.
Cations are the ions which bear positive charge and anions are the ions which bear negative charge.
Phosphoric acid is made by the combination of \(H^{+}\) cations and \(PO_4{3-}\) anions.
\(H_3PO_4\rightarrow 3H^++PO_4^{3-}\)