June 2023 NY Regents Chemistry Exam
25 Which substance is an Arrhenius base? (1) HNO3
(2) KNO3
(3) LiOH
(4) CH3COOH
Solution: An Arrhenius base produces OH- ions when dissolved in water. We can eliminate choices 1 and 2. A metal with an OH is a base as can be seen in Table L on the Reference Table where examples of bases are NaOH and KOH. Similarly, LiOH is an Arrhenius base.
Answer: 3
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