alleryStart learning →How did Arrhenius define a base?
AA compound giving hydrogen ions in water
BA compound giving hydroxide ions in water
CA compound donating an electron pair
DA compound with a bitter taste in water
Answer & Solution
Correct answer: B. A compound giving hydroxide ions in water
1. The Arrhenius definitions are a matched pair, both about dissolving in water.
2. The base is the one that yields hydroxide anions on dissolving.
3. Sodium hydroxide and calcium hydroxide are the familiar examples.
4. Yielding hydrogen ions instead would make the compound an Arrhenius acid.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 14 "Acid-Base Equilibria", section 14.1 Brønsted-Lowry Acids and Bases_
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