Carbonic acid, H2CO3, undergoes the following acid base equilibria: H2CO3,=H*(aq) + HCO;¯(aq) = H*(aq) + CO3²¯(aq). The pKa values for the first and second steps are 3.6 and 6.3, respectively. The pH of human blood is 7.37 and this is tightly regulated. Which of the following statements most accurately describes the concentrations of the different species in the above reaction. A) [H2CO3(aq)] is much larger than the other species B) [H2CO3(aq)] and [HCO; (aq)] are much larger than the other species C) [HCO; (aq)] and [CO32"(aq)] are much larger than the other species D) [CO3? (aq)] is much larger than the other species
Carbonic acid, H2CO3, undergoes the following acid base equilibria: H2CO3,=H*(aq) + HCO;¯(aq) = H*(aq) + CO3²¯(aq). The pKa values for the first and second steps are 3.6 and 6.3, respectively. The pH of human blood is 7.37 and this is tightly regulated. Which of the following statements most accurately describes the concentrations of the different species in the above reaction. A) [H2CO3(aq)] is much larger than the other species B) [H2CO3(aq)] and [HCO; (aq)] are much larger than the other species C) [HCO; (aq)] and [CO32"(aq)] are much larger than the other species D) [CO3? (aq)] is much larger than the other species
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter16: Solubility And Precipitation Equilibria
Section: Chapter Questions
Problem 70AP
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