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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