Ba(OH)2(aq) +H2SO4(aq) ------ BaSO4(s) + 2H2O(l)    molecular equation Ba2+(aq) + 2OH-(aq) + 2H-(aq) + SO42-(aq)----BaSO4(s) + 2H2O(l)   This is represent a complete ionic equation and net ionic equation because there is no spectator in the reaction, and every substance plays a role in the reaction