Base (chemistry)
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In chemistry, there are three definitions in common use of the word "base": Arrhenius bases, Brønsted bases, and Lewis bases. All definitions agree that bases are substances that react with acids, as
Soaps are weak bases formed by the reaction of fatty acids with sodium hydroxide or potassium hydroxide.
Ammonia fumes from aqueous ammonium hydroxide (in test tube) reacting with hydrochloric acid (in beaker) to produce ammonium chloride (white smoke).
Sodium hydroxide
The Brønsted–Lowry theory is an acid–base reaction theory, developed independently in 1923 by physical chemists Johannes Nicolaus Brønsted and Thomas Martin Lowry. The basic concept of this theory is
Johannes Brønsted
Thomas Martin Lowry 2