Tulsa Community College Equilibrium Between Carbonic Acid & Bicarbonate Questions

User Generated

lbhjbagxabj

Science

BCH 4053

Tulsa Community College

BCH

Description

Biochemistry buffers worksheet. I need help with it. Write your answers on the worksheet or draw by pen or pencil and take a picture of it and attach the picture below the question.
thank you!

I’ll tip generously.

Unformatted Attachment Preview

BCH4053.0002 Spring 2020 Topic: Water and Buffer Systems More than just a solvent: Water is a direct participant in some biochemical reactions, for instance, Propose the role of water in the reaction above: Buffer Solutions: Biological reactions are carried out at a very narrow pH range; the pH is controlled by various buffer systems. In the human blood, for instance, the pH is maintained at a narrow range between 7.35and 7.45and is buffered in part by carbonic acid (H2CO3), which is formed from dissolved carbon dioxide and water in the blood. The bicarbonate buffer system depends on the equilibrium between carbonic acid and bicarbonate (HCO3−), a reaction catalyzed by carbonic anhydrase. Draw the equilibrium between carbonic acid and bicarbonate, and write out its equilibrium constant expression: Describe how the Henderson-Hasselbalch equation may help correlate to the pH of a buffered solution: Example: A buffered aqueous solution is prepared using H2CO3 with pKa values of 6.35 and 10.33. Assuming that the [H2CO3] is 10 times larger than the [HCO3−] in the described solution, determine the pH of the solution: (Note: no other ionization states of carbonic acid are present; log(10) = 1; log(0.1) = -1). Explain if this particular solution would be more suitable to resist changes in pH upon addition of acid or base? Aspartic Acid: Aspartic Acid is an essential proteinogenic amino-acid with three ionizable groups: its amino group has a pKa of 9.90, the carboxylic acid group attached to the alpha carbon has a pKa of 1.99, while the carboxylic acid group on its side chain has a pKa of 3.90. Sketch out the structure of aspartic acid and give its one and three letter abbreviation. Draw aspartic acid in its fully protonated form and show each of its possible ionization reactions. Sketch a titration curve for aspartic acid in an aqueous solution. Indicate which two specifies are present at each of the half equivalence points, and the relative concentration of each.
Purchase answer to see full attachment
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Explanation & Answer

Attached. Please let me know if you have any ...


Anonymous
Awesome! Made my life easier.

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4

Related Tags