June 2017 NY Regents Chemistry Exam
45 Given the equation representing a reversible reaction: HCO3-(aq) + H2O(l) -> H2CO3(aq) + OH-(aq)
Which formula represents the H+ acceptor in the forward reaction? (1) HCO3-(aq) (2) H2O(l)
(3) H2CO3(aq)
(4) OH-(aq)
Solution: Going from left to right, we can see that HCO3- becomes H2CO3 which means it accepted an H+ ion.
Answer: 1
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