Excess hydrogen ion is eliminated from the body in the urine without lowering the pH excessively by reaction of H⁺ with ________ or ________.

Question

Quizplus · Accepted Answer

Excess hydrogen ions are buffered in the urine by reacting with ammonia (NH₃) to form ammonium (NH₄⁺) and with hydrogen phosphate (HPO₄^2-) to form dihydrogen phosphate (H₂PO₄^-), which helps prevent excessive lowering of urine pH.

Excess Hydrogen Ion Is Eliminated from the Body in the Urine