According to the Bronsted-Lowry definition, what is a conjugate acid-base pair in the reaction: NH3 + H2O <=> NH4+ + OH-?
Answer and explanation
Correct answer: D. H2O is an acid and OH- is its conjugate base
H2O donates a proton (H+) to become OH-, making H2O the acid and OH- its conjugate base. NH3 accepts a proton to become NH4+, making NH3 the base and NH4+ its conjugate acid.
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