Which term describes a substance that donates a proton in acid-base chemistry?

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Multiple Choice

Which term describes a substance that donates a proton in acid-base chemistry?

Explanation:
In acid-base chemistry, proton transfer is described by the Brønsted-Lowry framework: a substance that donates a proton is a Brønsted-Lowry acid. This definition centers on the ability to give up H+. For example, when hydrochloric acid donates a proton to water, HCl acts as the acid and water acts as the base, forming Cl− and H3O+. The Brønsted-Lowry base would be the species that accepts the proton. The Lewis definitions, meanwhile, describe acids as electron-pair acceptors and bases as electron-pair donors, which is a different perspective focused on electron pairs rather than protons. Some species can fit multiple definitions, but for the role of donating a proton, the label is Brønsted-Lowry acid.

In acid-base chemistry, proton transfer is described by the Brønsted-Lowry framework: a substance that donates a proton is a Brønsted-Lowry acid. This definition centers on the ability to give up H+. For example, when hydrochloric acid donates a proton to water, HCl acts as the acid and water acts as the base, forming Cl− and H3O+. The Brønsted-Lowry base would be the species that accepts the proton. The Lewis definitions, meanwhile, describe acids as electron-pair acceptors and bases as electron-pair donors, which is a different perspective focused on electron pairs rather than protons. Some species can fit multiple definitions, but for the role of donating a proton, the label is Brønsted-Lowry acid.

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