Conjugat acid-base pairs

Question

Identify the conjugate acid-base pairs in the following reaction:

H2O (l) + H2O (l) ↔ H3O+ (aq) +OH− (aq)

Answer 1

H₂O = Base

H₃O⁺ = Conjugate Acid

H₂O = Acid

OH^- = Conjugate Acid

*Note that water is both an acid AND a base in this chemical equation. This is because water is amphoteric (can act as both an acid and a base) with a neutral pH of 7.*