June 2018 NY Regents Chemistry Exam
50 Given the balanced equation representing a reaction:
HCl + H2O→H3O+ + Cl-
The water molecule acts as a base because it
(1) donates an H+
(2) accepts an H+
(3) donates an OH-
(4) accepts an OH-
Solution: A base is an H+ acceptor. We can see that H2O became H3O+, which means that it accepted an H+ ion.
Answer: 2
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