What do Bronsted-Lowry acids do?

Bronsted-Lowry acids are defined by their ability to donate protons, which are hydrogen ions (H+), to other substances in a chemical reaction. This proton donation is fundamental to the Bronsted-Lowry theory of acids and bases, distinguishing it from other definitions. When a Bronsted-Lowry acid donates an H+, it transforms into its corresponding conjugate base.

For example, when hydrochloric acid (HCl) donates a proton, it becomes Cl-, the conjugate base. This concept is essential for understanding acid-base reactions in various chemical contexts, including aqueous solutions and organic chemistry. The fundamental role of Bronsted-Lowry acids in facilitating reactions by donating protons is what makes option C the correct answer.