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| The Arrhenius base dissociates in water to give OH- ions and a cation. | |
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| Look, it says here that it was proposed in 1884 by Svante Arrhenius. | |
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| And according to this book, it is the oldest, most restrictive and simplest definition. | |
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| Hey! I found the second definiton: The Bronsted-Lowry definition. It is propposed by Danish chemist Johannes Bronsted and English chemist Thomas Lowry in 1923. | |
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