Arrhenius theory

The oldest Arrhenius theory defines bases as hydroxide anions, which is strictly applicable only to alkali.

Brønsted-Lowry acid-base theory has several advantages over Arrhenius theory.

But then the quick-following discovery that the old Arrhenius theory had been correct, that there were spores of life in deep space, had explained it.

This observation is consistent with Brønsted-Lowry acid-base theory (published in 1923) but cannot be explained under older Arrhenius theory approaches.

Edward C. Franklin studied the acid-base reactions in liquid ammonia in 1905 and pointed out the similarities to the water-based Arrhenius theory.

Maya was one of four planets in this general area whose life-systems seemed to have had a common origin, suggesting that the Arrhenius theory of space-traveling spores was true in some limited sense.

According to Arrhenius theory of electrolyte dissociation, the molecules of an electrolyte in solution are constantly splitting up into ions and the ions are constantly reuniting to form unionized molecules.

The Brønsted-Lowry model of proton donors and proton acceptors in acid-base reactions is an improvement over the Arrhenius theory, which was limited for it stated that bases had to contain a hydroxide ion.

The simplest is Arrhenius theory, which states than an acid is a substance that produces hydronium ions when it is dissolved in water, and a base is one that produces hydroxide ions when dissolved in water.

So by that definition hydrochloric acid (HCl in aqueous solution) is an acid... Arrhenius theory has been modified through the years, as the science progressed, but was useful for many years and still is used today for many aqueous solutions.