Define Bronsted-Lowry acid and base and provide an example of a conjugate acid-base pair.

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Multiple Choice

Define Bronsted-Lowry acid and base and provide an example of a conjugate acid-base pair.

The key idea is proton transfer: an acid donates a proton and a base accepts a proton. In the example, hydrochloric acid donates a proton to water, producing chloride ion and hydronium ion. This shows HCl as the acid and Cl− as its conjugate base, while water becomes H3O+ and is the conjugate acid of the base water. A conjugate acid-base pair is simply two species that differ by one proton, such as HCl and Cl−. The other statements don’t fit because they mix up who donates or accepts a proton, rely on electron transfer, or claim conjugate pairs only form in water.

The key idea is proton transfer: an acid donates a proton and a base accepts a proton. In the example, hydrochloric acid donates a proton to water, producing chloride ion and hydronium ion. This shows HCl as the acid and Cl− as its conjugate base, while water becomes H3O+ and is the conjugate acid of the base water. A conjugate acid-base pair is simply two species that differ by one proton, such as HCl and Cl−. The other statements don’t fit because they mix up who donates or accepts a proton, rely on electron transfer, or claim conjugate pairs only form in water.

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