What is the distinction between strong and weak good for?
We differentiate between strong and weak acids as a matter of convenience. Strong acids will be assumed to be 100% dissociated. For strong acids the hydronium ion concentration can be assumed to be equal to the acid concentration. When using a strong acid in a titration we can count on the fact that the added acide will be 100% converted into H3O+ and therefore we do not need to perfoem any kind of calculation or correction to this component of the solution. There are only 6 common strong acids. This also makes it easy to rememer them. They are HCl, HBr, HI, H2SO4, HNO3 and HClO4.
