Which of these is a Bronsted-Lowry acid in the reaction NH3 + H2O <-> NH4+ + OH-?

Answer and explanation

Correct answer: D. H2O

  1. Step 1: Water donates a proton to ammonia. Answer: H2O. Why not the others: NH3: Ammonia accepts the proton, so it is the base. NH4+: That is the conjugate acid of the ammonia. OH-: That is the conjugate base of water.

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