Which species donates a proton in the reaction NH3(aq) + H2O(aq)?

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Multiple Choice

Which species donates a proton in the reaction NH3(aq) + H2O(aq)?

Explanation:
Proton transfer is happening here: water donates a proton to ammonia. In Bronsted-Lowry terms, water is the acid and ammonia is the base. When water loses a proton, it becomes hydroxide (OH−), and when ammonia gains that proton, it becomes ammonium (NH4+). So the species providing the proton is water. Ammonia would only donate a proton in the reverse direction, and hydroxide would not donate in this forward process.

Proton transfer is happening here: water donates a proton to ammonia. In Bronsted-Lowry terms, water is the acid and ammonia is the base. When water loses a proton, it becomes hydroxide (OH−), and when ammonia gains that proton, it becomes ammonium (NH4+). So the species providing the proton is water. Ammonia would only donate a proton in the reverse direction, and hydroxide would not donate in this forward process.

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