Which formula can represent hydrogen ions in an aqueous solution?(1) OH-(aq) (2) Hg2^2+(aq) (3) H

August 2019 NY Regents Chemistry Exam

28 Which formula can represent hydrogen ions in an aqueous solution?
(1) OH-(aq)

(2) Hg2^2+(aq)

(3) H3O+(aq)

(4) NH4+(aq)

Solution: Hydrogen ions (H+) are also represented by H3O+ (hydronium ions).

Answer:3

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