Which of the following statements correctly describes the concept of acids and bases according to the Brønsted-Lowry theory?

• A. Acids are substances that increase the concentration of ${\mathrm{OH}}_{\mathrm{-}}$ ions, while bases increase the concentration of $H_{\mathrm{+}}$ ions.
• B. Acids are substances that donate $H_{\mathrm{+}}$ (protons), while bases are substances that accept $H_{\mathrm{+}}$ (protons).
• C. Acids are substances that accept electrons, while bases are substances that donate electrons.
• D. Acids are substances that donate electrons, while bases are substances that accept electrons.

Answer: (B)

Verified step by step guidance

1. Identify the Brønsted-Lowry theory, which defines acids and bases in terms of proton transfer.
2. According to the Brønsted-Lowry theory, an acid is a substance that donates a proton (H⁺) to another substance.
3. A base, in the Brønsted-Lowry theory, is a substance that accepts a proton (H⁺) from another substance.
4. Review the given statements and identify which one aligns with the Brønsted-Lowry definition of acids and bases.
5. The correct statement is: 'Acids are substances that donate protons, while bases are substances that accept protons.'