alleryStart learning →What did Humphry Davy establish about acids in 1815?
AThat oxygen is essential to every acid
BThat acids always contain a metal atom
CThat hydrogen is the essential constituent
DThat acids cannot exist without water
Answer & Solution
Correct answer: C. That hydrogen is the essential constituent
1. Davy tested what all acids actually had in common.
2. He showed that the essential constituent is hydrogen, not oxygen.
3. That result pointed the whole subject towards the proton.
4. Both the Arrhenius and Bronsted-Lowry definitions rest on it.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 14 "Acid-Base Equilibria", section 14.1 Brønsted-Lowry Acids and Bases_
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