Which positive ion must be present in an aqueous solution of an Arrhenius acid?

NY Regents Chemistry Exam August 2023 Question 27

27 Which positive ion must be present in an aqueous solution of an Arrhenius acid?

(1) H3O+

(2) Na+

(3) NH4+

(4) Rb+

Solution: An Arrhenius acid produces hydronium ions (H3O+) when dissolved in water, choice 1

Choice 2

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