Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 56RE
RECALL What quality of zwitterions makes them desirable buffers?
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4. Only ONE of the five compounds below can be prepared by an aldol condensation in
which a single carbonyl compound is treated with base. Which one is it?
To solve this problem, reverse the aldol condensation that formed each of these molecules to find out what two molecules
came together to make the products. The one in which the two molecules are identical is the answer.
Ph
Ph
ཚིག གནས ག ནཱ ཀ ན ཀནཱ
A
Ph
H
B
Ph
Ph
H
D
Ph.
Ph
Ph
E
H
5. Which one is the major organic
product obtained from the following
reaction sequence?
First, equimolar amounts of cyclopentanone and
LDA are mixed at -78°C. Then propionaldehyde
(propanal) is added. Addition of aqueous acid
completes the process.
LDA, -78°C.
1.
2. H₂O*
H
A
B
H
0
D
H
H
E
2. Which one is the major organic
product obtained from the following
reaction?
NaOH, H₂O
heat
A
B
C
D
E
Chapter 2 Solutions
Biochemistry
Ch. 2 - REFLECT AND APPLY Why is water necessary for life?Ch. 2 - REFLECT AND APPLY Contemplate biochemistry if...Ch. 2 - RECALL What is a van der Waals force?Ch. 2 - RECALL What is an induced dipole?Ch. 2 - RECALL What is a salt bridge?Ch. 2 - RECALL Under what circumstance is a molecule that...Ch. 2 - REFLECT AND APPLY Which would you think would be a...Ch. 2 - RECALL List the three types of van der Waals...Ch. 2 - RECALL A hydrogen bond is a special case of what...Ch. 2 - REFLECT AND APPLY Why do you think that most...
Ch. 2 - RECALL What are some macromolecules that have...Ch. 2 - BIOCHEMICAL CONNECTIONS How are hydrogen bonds...Ch. 2 - REFLECT AND APPLY Rationalize the fact that...Ch. 2 - REFLECT AND APPLY Draw three examples of types of...Ch. 2 - RECALL What are the requirements for molecules to...Ch. 2 - REFLECT AND APPLY Many properties of acetic acid...Ch. 2 - REFLECT AND APPLY How many water molecules could...Ch. 2 - REFLECT AND APPLY Both RNA and DNA have negatively...Ch. 2 - RECALL Identify the conjugate acids and bases in...Ch. 2 - RECALL Identify conjugate acids and bases in the...Ch. 2 - REFLECT AND APPLY Aspirin is an acid with a pKa of...Ch. 2 - RECALL Why does the pH change by one unit if the...Ch. 2 - MATHEMATICAL Calculate the hydrogen ion...Ch. 2 - MATHEMATICAL Calculate the hydrogen ion...Ch. 2 - MATHEMATICAL Calculate the hydroxide ion...Ch. 2 - RECALL Define the following: (a) Acid dissociation...Ch. 2 - REFLECT AND APPLY Look at Figure 2.17. If you did...Ch. 2 - BIOCHEMICAL CONNECTIONS List the criteria used to...Ch. 2 - BIOCHEMICAL CONNECTIONS What is the relationship...Ch. 2 - MATHEMATICAL What is the [CH3COO]/[CH3COOH] ratio...Ch. 2 - MATHEMATICAL What is the [CH3COO]/[CH3COOH] ratio...Ch. 2 - MATHEMATICAL What is the ratio of TRIS/TRIS-H+ in...Ch. 2 - MATHEMATICAL What is the ratio of HEPES/HEPES-H+...Ch. 2 - MATHEMATICAL How would you prepare 1 L of a 0.050...Ch. 2 - MATHEMATICAL The buffer needed for Question 35 can...Ch. 2 - MATHEMATICAL Calculate the pH of a buffer solution...Ch. 2 - MATHEMATICAL Calculate the pH of a buffer solution...Ch. 2 - MATHEMATICAL Calculate the pH of a buffer solution...Ch. 2 - MATHEMATICAL A catalog in the lab has a recipe for...Ch. 2 - MATHEMATICAL If you mix equal volumes of 0.1 M HCl...Ch. 2 - MATHEMATICAL What would be the pH of the solution...Ch. 2 - MATHEMATICAL If you have 100 mL of a 0.10 M TRIS...Ch. 2 - MATHEMATICAL What would be the pH of the solution...Ch. 2 - MATHEMATICAL Show that, for a pure weak acid in...Ch. 2 - MATHEMATICAL What is the ratio of concentrations...Ch. 2 - BIOCHEMICAL CONNECTIONS You need to carry out an...Ch. 2 - Prob. 48RECh. 2 - Prob. 49RECh. 2 - BIOCHEMICAL CONNECTIONS Which of the buffers shown...Ch. 2 - Prob. 51RECh. 2 - REFLECT AND APPLY In Section 2-4, we said that at...Ch. 2 - MATHEMATICAL Define buffering capacity. How do the...Ch. 2 - BIOCHEMICAL CONNECTIONS If you wanted to make a...Ch. 2 - BIOCHEMICAL CONNECTIONS We usually say that a...Ch. 2 - RECALL What quality of zwitterions makes them...Ch. 2 - Prob. 57RECh. 2 - Prob. 58RECh. 2 - Prob. 59RECh. 2 - BIOCHEMICAL CONNECTIONS A frequently recommended...
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