Question

question 7 of 10
what happens in a brønsted-lowry acid - base reaction?
a. an acid donates an h⁺, and a base donates electrons.
b. an acid donates an h⁺, and a base accepts an h⁺.
c. an acid accepts an electron pair from a base.
d. an acid donates an h⁺, and a base donates an oh⁻.

Explanation:

According to the Brønsted - Lowry theory, an acid is a substance that donates \(H^{+}\) (proton), and a base is a substance that accepts \(H^{+}\).

• Option A: Incorrect. Bases in Brønsted - Lowry theory accept \(H^{+}\), not donate electrons (electron - pair donation is part of Lewis acid - base theory).
• Option B: Correct. Follows the Brønsted - Lowry definitions.
• Option C: Incorrect. This is related to Lewis acid - base theory (acid accepts electron pair).
• Option D: Incorrect. Bases in Brønsted - Lowry theory accept \(H^{+}\), not donate \(OH^{-}\) (donation of \(OH^{-}\) is part of Arrhenius acid - base theory).

Answer:

B. An acid donates an \(H^{+}\), and a base accepts an \(H^{+}\)