This effectively rules out the possibility of the free hydron being present in solution, even as a fleeting intermediate. For this reason, in liquid strong acids, hydrons are believed to diffuse by sequential transfer from one molecule to the next along a network of hydrogen bonds through what is known as the Grotthuss mechanism.
As a result, it is impossible for the free hydron to be present in solution, even temporarily. In strong acid solutions, hydrons are believed to move from one molecule to another via a process involving hydrogen bonding, known as the Grotthuss mechanism.