Question

What is the anion found in phosphoric acid?

Answer 1

Its PO43- their are others as well but thats the answer you want

Answer 2

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.

$H_3PO_4\rightarrow 3H^++PO_4^{3-}$