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Which substance is an Arrhenius acid?(1) H2 (2) HCl(3) KCl (4) NH3

January 2019 NY Regents Chemistry Exam

26 Which substance is an Arrhenius acid? (1) H2

(2) HCl

(3) KCl

(4) NH3

Solution: The definition of an Arrhenius acid is that it gives off H+ ions when dissolved in water. We can also look at Table K on the Reference Table for the common acids. HCl is listed in Table K.

Answer: 2

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