alleryStart learning →Under the Bronsted and Lowry definition, what makes a compound an acid?
AIt releases a hydroxide ion into the water
BIt accepts a proton from another compound
CIt donates a proton to another compound
DIt accepts an electron pair from a partner
Answer & Solution
Correct answer: C. It donates a proton to another compound
1. This definition centres on the proton, which is a hydrogen ion.
2. The compound that hands a proton over is the acid, the proton donor.
3. The compound that takes the proton up is the base, the proton acceptor.
4. Releasing hydroxide is the older Arrhenius picture of a base, not this one.
5. Accepting an electron pair belongs to the more general model introduced later.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 14 "Acid-Base Equilibria", section 14.1 Brønsted-Lowry Acids and Bases_
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