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February 22nd was a Danish chemist who developed a theory to explain acids and bases at the same time as English chemist Thomas Lowry. The Brønsted-Lowry theory defines acids as any chemical that is able to donate a proton or hydrogen ion to a reaction. A base would then become any compound that gains or accepts a proton or hydrogen ion during a reaction.

Brønsted-Lowry theory is just one acid/base theory. There are Arrhenius acids and bases and Lewis acids and bases as well. Find out more about these theories, take the acids and bases quiz to test your knowledge and out what else occurred on this day in science history.


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