Answer:
A Brønsted-Lowry acid is a substance which donates protons to other substances. (option c.)
Explanation:
For Brønsted-Lowry acids, are the ones that donates protons and bases, the ones that accepts H⁺ from others compounds.
In this reaction:
NH₃ + HCl → NH₄Cl
The hydrocloridic acid donates the proton to ammonia to make ammonium chloride. So the HCl, is a Brønsted-Lowry acid while the ammonia is a base.
There are cases, like water that behaves as acid and base.
These compounds are called amphoteric because it can donate H⁺ or OH⁻ at the same time.
H₂O ⇄ H⁺ + OH⁻
