Chemistry-Stud. Solution Guide
9th Edition
ISBN: 9781285697185
Author: ZUMDHAL
Publisher: CENGAGE L
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Textbook Question
Chapter 3, Problem 3ALQ
You are making cookies and are missing a key ingredient—eggs. You have most of the other ingredients needed to make the cookies, except you have only 1.33 cups of butter and no eggs. You note that the recipe calls for two cups of butter and three eggs (plus the other ingredients) to make six dozen cookies. You call a friend and have him bring you some eggs.
a. What number of eggs do you need?
b. If you use all the butter (and get enough eggs), what number of cookies will you make?
Unfortunately, your friend hangs up before you tell him how many eggs you need. When he arrives, he has a surprise for you— to save time, he has broken them all in a bowl for you. You ask him how many he brought, and he replies. “I can’t remember.” You weigh the eggs and find that they weigh 62.1 g. Assuming that an average egg weighs 34.21 g.
a. What quantity of butter is needed to react with all the eggs?
b. What number of cookies can you make?
c. Which will you have left over, eggs or butter?
d. What quantity is left over?
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Consider the data below to answer the following questions.
Cyanohydrins are important intermediates in the synthesis of a-hydroxycarboxylic acids from ketones
and aldehydes. The nitrile functional group can be hydrolyzed by aqueous acid to yield a carboxylic
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cyanohydrin is treated with aqueous base the original carbonyl compound is isolated.
HO
H
HCEN
H-3-
HO'
NaOH
HO
cyanohychin
a.
a nucleophilic substitution
b.
an electrophilic addition
C10
OH
CH-COOH
A. The reaction of an aldehyde with hydrogen cyanide is an example of
+ NaCN + H₂O
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H-
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d. a nucleophilic addition
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Refer to the data below to answer the following questions:
The octapeptide saralasin is a specific antagonist of angiotensin II. A derivative of saralasin is used
therapeutically as an antihypertensive. Amino acid analysis of saralasin show the presence of the following
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Ala, Arg, His, Pro, Sar, Tyr, Val, Val
A. Sar is the abbreviation for sarcosine, N-methyl aminoethanoic acid. Draw the structure of sarcosine.
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Tyr-Val-His
Sar-Arg-Val
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Arg-Val-Tyr
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Give the major organic product(s) of each of the following reactions or sequences of reactions. Show
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A.
B.
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H₂Pt
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NaN
1. LIAH ether
Br
4
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C.
D.
E.
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Br
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Chapter 3 Solutions
Chemistry-Stud. Solution Guide
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