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

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter4: Acids And Bases

Section4.6: Molecular Structure And Acidity

Problem 1Q: Acid-Base Equilibria Many factors contribute to the acidity of organic compounds. Electronegativity,...

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