This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 10. A solution prepared with 4 x 10 4 moles of acetic acid (CH 3 COOH) dissociates in water to produce 2 x 10 3 moles of protons and 3.2 x 10 6 moles of conjugate base. a. What is the dissociation constant (Ka) for acetic acid? b. What is the pKa of acetic acid? c. Draw the structure of the conjugate base. d. What is the pH of this solution (Henderson-Hasselbach)? Chapter 3 11. Draw the zwitterion of the amino acid valine. 12. At pH 9.5, what is the net charge for Ala, Gly, and Phe? At pH 1.5? At pH 12? 13. What is the pI value for Ala, Gly, and Phe? 14. Draw the peptide bond. 15. Identify the primary sequence for the polypeptide that yields these fragments upon treatment: His-met-thr-met-ala-trp; Leu-asn-asp-phe; Val-lys obtained from chymotrypsin Leu-asn-asp-phe-his-met; Ala-trp-val-lys; Thr-met obtained from CNBr...
View Full Document
This note was uploaded on 04/29/2008 for the course CHEM 345 taught by Professor North during the Spring '08 term at William Penn University.
- Spring '08