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Given the balanced equation representing a reaction:HCl + H2O→H3O+ + Cl-The water molecule acts as

June 2018 NY Regents Chemistry Exam

50 Given the balanced equation representing a reaction: HCl + H2OH3O+ + 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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