Write the chemical reaction for the ammonium ion in water, whose equilibrium constant is ka. include the physical states for each species.

The chemical reaction for the ammonium ion in water is:

NH4+(aq) + H2O(l) > H3O+ (aq) + NH3 (aq)  Ka = 5.60x10^-10

The ammonium ion NH4+ in aqueous form reacts with liquid water forming hydronium ion (aqueous) and aqueous ammonia, with a Ka of 5.60x10^-10.