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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