What is the acid principle in water? Is there such a thing as #H^+#?
In aqueous solution, we REPRESENT the acidium ion as
The acidium ion is the characteristic cation of the solvent; and for water we represent this species as
As far we know, the acidium species is a cluster of 3 or 4 water molecules, with an EXTRA proton attached to give
Nowadays, it is common to represent the acidium ion in water as
Other solvent systems exist. In liquid ammonia, the characteristic cation, the acid, is