what is the net ionic equation for the complete neuttralization of phosphoric acid with potassium hydroxide? Solution we have below given equation H 3 PO 4 (aq) + 3 KOH (aq) --> K 3 PO 4 (aq) + 3 H 2 O (l) Total ionic equation is Spectator ions should not be removed here. Spectator ions are part of total ionic equation 3 H + (aq) + PO 4 3- (aq) + 3 K + (aq) + 3 OH - (aq) --> 3 K + (aq) + PO 4 3- (aq) + 3 H 2 O (l) Spectator ions should be removed now. Spectator ions are not part of total ionic equation After removing Spectator ions, net ionic equation is: H + (aq) + OH - (aq) --> H 2 O (l) .