Phosphate is one of the major buffer systems in the blood. Phosphate has the following pK values for the dissociation of each of its three protons: pK1 = 2.1, pK2 = 7.1, and pK1 = 12.7. Its buffering ability is lowest at which of the following pH values? a. 7.0 b. 7.3 c. 12.6 d. 4.3

Phosphate is one of the major buffer systems in the blood. Phosphate has the following pK values for the dissociation of each of its three protons: pK1 = 2.1, pK2 = 7.1, and pK1 = 12.7. Its buffering ability is lowest at which of the following pH values? a. 7.0 b. 7.3 c. 12.6 d. 4.3

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 45E: Carbonate buffers are important in regulating the pH of blood at 7.40. If the carbonic acid...

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Diol

In chemistry there are so many chemical compounds that have a hydroxyl group but a chemical compound having two hydroxyl groups (-OH) is termed as a diol. It also implies the presence of two alcohols whereas polyols contain two or more than two hydroxyl groups (-OH). Glycol or 1,2-diol is an aliphatic diol that has two alcohol groups on adjacent carbon atoms. In industries, the most commonly used diol is ethylene glycol.

Question

Phosphate is one of the major buffer systems in the blood. Phosphate has the following pK values for the dissociation of each of its three protons: pK₁ = 2.1, pK₂ = 7.1, and pK₁ = 12.7. Its buffering ability is lowest at which of the following pH values?

a. 7.0

b. 7.3

c. 12.6

d. 4.3

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