Acid-base theory

Acid-base theory helps us understand chemical reactions involving acids and bases. An acid is a substance that donates protons (H+ ions) and has a sour taste, like lemon juice. A base, on the other hand, accepts protons and often feels slippery, like soap. The dual definitions include the Arrhenius theory, which defines acids as substances that produce H+ in water and bases as those that produce OH-. The Brønsted-Lowry theory expands this by emphasizing proton transfer. These concepts are vital in chemistry, biology, and even everyday life, helping to explain reactions, pH levels, and the behavior of substances.