[SorchaMM]

I don't completely understand everything that goes on when an acid ionizes in a solution.  (With Arrhenious bases, the textbook says they "dissociate" in solution to release hydroxide ions into the solution. )
For instance,
b. NH₃ as Arrhenious base
NH₃ + H₂0 yields NH₄ + OH

a. Ionization of HClO₃ in water
I would think that it would react with water and remove a hydrogen, leaving OH^- but the equation is HClO₃ + H₂O yields H₃O⁺ + ClO₃^-.

I don't understand like... how to know when OH is going to form and when it isn't; are Arrhenious bases when the easiest products to form involve OH?

[Ashutosh]

water is amphoteric in nature.it behave like acid when react with base.it behave like base while reacting with acid.in presence of NH3 it donates H+ to NH3 solution because NH3 is lewis base.But HClO3 is very strong acid.it dissociates to give H+ ion to water.hence H3O+ is formed.for this second reaction water behaves like as a base.