Organic Chemistry, Books a la Carte Edition (8th Edition)
8th Edition
ISBN: 9780134074580
Author: Bruice, Paula Yurkanis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 21.3, Problem 8P
Draw the predominant form for glutamate in a solution with the following pH:
a. 0
b. 3
c. 6
d. 11
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
15. The pka of acetylsalicylic acid (aspirin) is 3.5. The pH of gastric juice in the human stomach is about 2-3,
and that in the small intestine is about 8.0. Aspirin will be
A. Unionized in the small intestine and the stomach.
B. Completely ionized in the small intestine and the stomach.
C. lonized in the stomach and almost unionized in the small intestine.
D. Ionized in the small intestine and almost unionized in the stomach.
18.
19.
The pH of a solution of HCI was found to be 3.4. The concentration of HCI of this
solution (in mol/L) is which of the following?
a. 4.0 x 10-4
b. 3.4
c. 0.29
d. 2.5 x 10-¹
-11
e. 2.0 x 10-4
The organic compound aniline (C6H5NH₂) acts as weak base. What is the chemical
formula of aniline's conjugate acid?
a. С₁H5COOH
b. C₂H5NH¯
C. H3O+
d. OH-
e. C6H5NH3+
What is the pH of the solution that is prepared when 121 g
piperidinium chloride salt is dissolved in 100 ml water and
mixed with 100 ml 1M NAOH?
Select one:
a. 3.8
b. 11.8
10.2
d.
9.2
Chapter 21 Solutions
Organic Chemistry, Books a la Carte Edition (8th Edition)
Ch. 21.1 - a. Explain why, when the imidazole ring of...Ch. 21.2 - a. Which isomer(R)-alanine or (S)-alanineis...Ch. 21.2 - Prob. 4PCh. 21.3 - Prob. 5PCh. 21.3 - Prob. 6PCh. 21.3 - Draw the predominant form for glutamate in a...Ch. 21.3 - a. Why is the pKa of the glutamate side chain...Ch. 21.4 - Calculate the pI of each of the following amino...Ch. 21.4 - a. Which amino acid has the lowest pI value? b....Ch. 21.4 - Prob. 12P
Ch. 21.4 - Prob. 13PCh. 21.4 - Explain why the pI of lysine is the average of the...Ch. 21.5 - What aldehyde is formed when valine is treated...Ch. 21.5 - Prob. 16PCh. 21.5 - Prob. 17PCh. 21.5 - Prob. 18PCh. 21.5 - Prob. 19PCh. 21.6 - Why is excess ammonia used in the preceding...Ch. 21.6 - Prob. 21PCh. 21.6 - What amino acid is formed using the...Ch. 21.6 - Prob. 23PCh. 21.6 - What amino acid is formed when the aldehyde used...Ch. 21.7 - Esterase is an enzyme that catalyzes the...Ch. 21.8 - Draw the tetrapeptide Ala-Thr-Asp-Asn and indicate...Ch. 21.8 - Draw the resonance contributors of the peptide...Ch. 21.8 - Which bonds in the backbone of a peptide can...Ch. 21.9 - An opioid pentapeptide has the following...Ch. 21.9 - What is the configuration about each of the...Ch. 21.9 - Glutathione is a tripeptide whose function is to...Ch. 21.10 - What dipeptides would be formed by heating a...Ch. 21.10 - Suppose you are trying to synthesize the dipeptide...Ch. 21.10 - Show the steps in the synthesis of the...Ch. 21.10 - a. Calculate the overall yield of bradykinin when...Ch. 21.11 - Show the steps in the synthesis of the...Ch. 21.13 - Prob. 37PCh. 21.13 - In determining the primary structure of insulin,...Ch. 21.13 - A decapeptide undergoes partial hydrolysis to give...Ch. 21.13 - Explain why cyanogen bromide does not cleave on...Ch. 21.13 - Indicate the peptides produced from cleavage by...Ch. 21.14 - Prob. 43PCh. 21.14 - Three peptides were obtained from a trypsin...Ch. 21.14 - Prob. 45PCh. 21.15 - How would a protein that resides in the nonpolar...Ch. 21.16 - a. Which would have the greatest percentage of...Ch. 21.17 - When apples that have been cut are exposed to...Ch. 21 - Glycine has pK2 values of 2.34 and 9.60. At what...Ch. 21 - Prob. 50PCh. 21 - A titration curve is a plot of the pH of a...Ch. 21 - Prob. 52PCh. 21 - Aspartame (its structure is on page 1007) has a pl...Ch. 21 - Draw the form of aspartate that predominates at...Ch. 21 - Show how phenylalanine can be prepared by...Ch. 21 - A professor was preparing a manuscript for...Ch. 21 - What aldehydes are formed when the following amino...Ch. 21 - Prob. 58PCh. 21 - Determine the amino acid sequence of a polypeptide...Ch. 21 - Prob. 60PCh. 21 - Prob. 61PCh. 21 - Which is the more effective buffer at...Ch. 21 - Identify the location and type of charge on the...Ch. 21 - Draw the product obtained when a lysine side chain...Ch. 21 - After the polypeptide shown below was treated with...Ch. 21 - Treatment of a polypeptide with 2-mercaptoethanol...Ch. 21 - Show how aspartame can be synthesized using DCCD.Ch. 21 - -Amino acids can be prepared by treating an...Ch. 21 - Reaction of a polypeptide with carboxypeptidase A...Ch. 21 - a. How many different octapeptides can be made...Ch. 21 - Glycine has pKa values of 2.3 and 9.6. Do you...Ch. 21 - A mixture of 15 amino acids gave the fingerprint...Ch. 21 - Write the mechanism for the reaction of an amino...Ch. 21 - Prob. 74PCh. 21 - Show how valine can be prepared by a. a...Ch. 21 - The primary structure of -endorphin, a peptide...Ch. 21 - A chemist wanted to test his hypothesis that the...Ch. 21 - Propose a mechanism for the rearrangement of the...Ch. 21 - A normal polypeptide and a mutant of the...Ch. 21 - Determine the amino acid sequence of a polypeptide...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- A substance that functions to prevent rapid, drastic changes in the pH of a body fluid by changing strong acids and bases into weak acids and bases is called an: a.salt. b.buffer. c.enzyme. d.coenzyme.arrow_forwardSaccharin ( HC7H4NOS) is a weak acid with pk 2.32 at 25 °C. It is used in the form of sodium saccharide, NaC7H4NO3S. What is the pH of a 0.19 M solution of sodium saccharide at 25 °C? Question 1 1 pt Question 2 2 pts Question 3 1 pt Question 4 2 pts Question 5 1 pt Question 6 2 pts Question 7 1 pt Question 8 2 pts Question 9 1 pt Question 10 2 pts Question 11 1 pt Question 12 1 pt pH 02 ΝΗ Saccharinarrow_forwardTitration of a polyprotic acid 4. L-ornithine is a metabolic intermediate in mammals. It is involved in the Urea Cycle, the process by which animals remove nitrogen wastes from the body. L-ornithine is also used as a nutritional supplement, with alleged benefits such as decreasing fatigue, enhancing wound healing and reducing anxiety. L-ornithine contains 3 ionizable groups, x, y & z, with the following pKa’s (pKax = 10.76; pKay = 8.69; pKaz = 1.71). The structure of L-ornithine in the fully protonated form is shown below. Let us analyze the acid-base behavior of L-ornithine. x +H3N L-ornithine NH3+ у OH Zarrow_forward
- An alkaline reaction of an aqueous solution has: A) Glutamic acid B) Sodium citrate for injection C) Potassium acetate D) Methioninearrow_forwardA solution has a concentration of 2.4 x 10-7. Calculate the pH and indicate if the solution is acidic or basic. Select one: a. 2.4, acidic b. 6.6, acidic c. 6.6, basic d. 2.4, basic e. 6.61979, acidicarrow_forwardCalculate the pH for a mixture of 0.5 mole of benzoic acid and 1 mole of Sodium Benzoate. The pKa of Benzoic Acid is 4.2 PLEASE SHOW WORK A. 3.0 B. 3.2 C. 6.8 D. 4.8 E. 5.2 F. 1.8 G. 4.4 H. 4.5 I. 3.6arrow_forward
- Sodium benzoate, NaC,H,COO, is used as preservatives in vinegar, soy sauce, etc. The pH of a 0.10 M aqueous solution of sodium benzoate is 8.60. What is the pk. of benzoic acid, CoH,COOH? A. 6.20 B.5.40 C.9.80 D.4.20arrow_forwardWhat is the pOH of a 6.0 x 10-7 M aqueous solution of HCl? a.5.2 b.7.8 c.6.2 d.8.9arrow_forwardIn reactions with copper and cobalt salts, preliminary ionization of acidic forms of barbiturates: A. Required B. Not requiredarrow_forward
- Qq.24. Subject :- Che The ionization constant (Kb) of a weak base is 1.7 x 10-9. What is the pH of a 0.015 M solution? a. 7.59 b. 12.17 c. 10.8 d. 8.70arrow_forward1 2. 3) 6. 10 11 12 13 14 An analytical chemist is titrating 171.3 mL of a 0.5600M solution of propylamine (C,H,NH,) with a 0.8900M solution of HNO2. The p K, of propylamine is 3.46. Calculate the pH of the base solution after the chemist has added 71.3 mL of the HNO, solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO, solution added. Round your answer to 2 decimal places. pH = | %3D Submit Assignment Continue MacBook Air F1 F9 F10 F7 F8 80 F3 esc O00 F4 F5 F2arrow_forwardIn a highly basic solution, pH = 13, the dominant form of glycine is: a. NH2—CH2—COOH. b. NH2—CH2—COO–. c. NH2—CH3+—COO–. d. NH3+—CH2—COOH. e. NH3+—CH2—COO–.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage Learning
Chemistry for Today: General, Organic, and Bioche...
Chemistry
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Cengage Learning
Biomolecules - Protein - Amino acids; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=ySNVPDHJ0ek;License: Standard YouTube License, CC-BY