ORGANIC CHEMISTRY (LL)-PACKAGE
8th Edition
ISBN: 9781319316389
Author: VOLLHARDT
Publisher: MAC HIGHER
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Chapter 4.4, Problem 4.11E
(a)
Interpretation Introduction
Interpretation:
The value of ΔG°for the equilibrium between the two chair conformations of 1-ethyl-1-methylcyclohexane is to be calculated.
Concept Introduction:According to the position of methyl group and size of the molecules, the interaction between the hydrogen atoms differs, thus stability can be explained.
(b)
Interpretation Introduction
Interpretation:
The value of ΔG° for the equilibrium between the two chair conformations of cis-1-ethyl-4-methylcyclohexane is to be calculated.
Concept Introduction:
The ethyl group is larger in size compared to methyl group, so according to the size difference and their conformation stability of the compound differs.
(c)
Interpretation Introduction
Interpretation:The value ofΔG° for the equilibrium between the two chair conformations of trans-1-ethyl-1-methylcyclohexane is to be calculated.
Concept Introduction:The ethyl group is larger in size compared to methyl group, so according to the size difference and their conformation stability of the compound differs.
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Arrange the solutions in order of increasing acidity. (Note that K (HF) = 6.8 x 10 and K (NH3) = 1.8 × 10-5)
Rank solutions from least acidity to greatest acidity. To rank items as equivalent, overlap them.
▸ View Available Hint(s)
Least acidity
NH&F NaBr NaOH
NH,Br NaCIO
Reset
Greatest acidity
1. Consider the following molecular-level diagrams of a titration.
O-HA molecule
-Aion
°°
о
°
(a)
о
(b)
(c)
(d)
a. Which diagram best illustrates the microscopic representation for the
EQUIVALENCE POINT in a titration of a weak acid (HA) with sodium.
hydroxide?
(e)
Answers to the remaining 6 questions will be hand-drawn on paper and submitted as a single
file upload below:
Review of this week's reaction:
H₂NCN (cyanamide) + CH3NHCH2COOH (sarcosine) + NaCl, NH4OH, H₂O --->
H₂NC(=NH)N(CH3)CH2COOH (creatine)
Q7. Draw by hand the reaction of creatine synthesis listed above using line structures without showing
the Cs and some of the Hs, but include the lone pairs of electrons wherever they apply. (4 pts)
Q8. Considering the Zwitterion form of an amino acid, draw the Zwitterion form of Creatine. (2 pts)
Q9. Explain with drawing why the C-N bond shown in creatine structure below can or cannot rotate. (3
pts)
NH2(C=NH)-N(CH)CH2COOH
This bond
Q10. Draw two tautomers of creatine using line structures. (Note: this question is valid because problem
Q9 is valid). (4 pts)
Q11. Mechanism. After seeing and understanding the mechanism of creatine synthesis, students should
be ready to understand the first half of one of the Grignard reactions presented in a past…
Chapter 4 Solutions
ORGANIC CHEMISTRY (LL)-PACKAGE
Ch. 4.1 - Prob. 4.1ECh. 4.1 - Prob. 4.3TIYCh. 4.2 - Prob. 4.4ECh. 4.2 - Prob. 4.6TIYCh. 4.3 - Prob. 4.7ECh. 4.4 - Prob. 4.8ECh. 4.4 - Prob. 4.10TIYCh. 4.4 - Prob. 4.11ECh. 4.4 - Prob. 4.12ECh. 4.4 - Prob. 4.14TIY
Ch. 4.6 - Prob. 4.15ECh. 4.7 - Prob. 4.16ECh. 4.7 - Prob. 4.17ECh. 4.7 - Prob. 4.18ECh. 4 - Prob. 21PCh. 4 - Prob. 22PCh. 4 - Prob. 23PCh. 4 - Prob. 24PCh. 4 - Prob. 25PCh. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - Prob. 29PCh. 4 - Prob. 30PCh. 4 - Prob. 31PCh. 4 - Prob. 32PCh. 4 - Prob. 33PCh. 4 - Prob. 34PCh. 4 - Prob. 35PCh. 4 - Prob. 36PCh. 4 - Prob. 37PCh. 4 - Prob. 38PCh. 4 - Prob. 39PCh. 4 - Prob. 40PCh. 4 - Prob. 41PCh. 4 - Prob. 42PCh. 4 - Prob. 43PCh. 4 - Prob. 44PCh. 4 - Prob. 45PCh. 4 - Prob. 46PCh. 4 - Prob. 47PCh. 4 - Prob. 48PCh. 4 - Prob. 49PCh. 4 - Prob. 50PCh. 4 - Prob. 51PCh. 4 - Prob. 52PCh. 4 - Prob. 53PCh. 4 - Prob. 54PCh. 4 - Prob. 55PCh. 4 - Prob. 56PCh. 4 - Prob. 57PCh. 4 - Prob. 58PCh. 4 - Prob. 59PCh. 4 - Prob. 60P
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