Which from following compounds accepts proton from water molecule according to Bronsted-Lowry theory?

Which from following compounds accepts proton from water molecule according to Bronsted-Lowry theory?
  1. $\mathrm{NaOH}_{(\mathrm{aq})}$
  2. $\mathrm{HCl}_{(\mathrm{aq})}$
  3. $\mathrm{NH}_{3(\mathrm{aq})}$
  4. $\mathrm{NH}_4 \mathrm{OH}_{(\mathrm{aq})}$

Solution

$\mathrm{H}_2 \mathrm{O}_{(\ell)}+\mathrm{NH}_{3(\mathrm{aq})} \rightleftharpoons \mathrm{NH}_{4(\mathrm{aq})}^{+}+\mathrm{OH}_{(\mathrm{aq})}^{-}$

Asked in: MHT CET 2021 (20 Sep Shift 2)

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