# How do I predict the products, identify the spectator ion, and write the net ionic equation for the following: H_3PO_4(aq)+3NaOH(aq)-> ?

Well, the spectator ion is $\left[N {a}^{+}\right]$...........
There will be LITTLE $P {O}_{4}^{3 -}$ in aqueous solution; phosphoric acid will speciate to give ${H}_{2} P {O}_{4}^{-}$, and $H P {O}_{4}^{- 2}$.......