Which substance is amphoteric?
Answer and explanation
Correct answer: C. Water, H₂O
- Step 1: Water can donate or accept a proton, so it is amphoteric.
Answer
Water, H₂O.
Why not the others: Hydrochloric acid, HCl: HCl only donates protons. Sodium hydroxide, NaOH: the hydroxide ion only accepts protons. Sodium chloride, NaCl: the ions of a neutral salt do not act as acid or base.
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