Macroscale and Microscale Organic Experiments
7th Edition
ISBN: 9781337329552
Author: Kenneth L. Williamson; Katherine M. Masters
Publisher: Cengage Learning US
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Question
Chapter 4, Problem 6Q
Interpretation Introduction
Interpretation:
The reason for the use of gravity filtration instead of suction filtration to remove the suspended impurities and charcoal from a hot solution should be explained.
Concept introduction:
Gravity filtration is the process that is used to separate the solids from liquids based on the particle size with the help of gravity. This method is used when the filtrate is to be retained and the residue on the filter paper is discarded. It is a slow process and removes only large particles from the air.
Suction filtration is a technique that is used to separate the mixtures of solids and liquids. This method is used when the solid is to be retained and the filtrate is discarded. It is much faster than gravity filtration.
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Students have asked these similar questions
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…
Propose a synthesis pathway for the
following transformations. b) c) d)
Chapter 4 Solutions
Macroscale and Microscale Organic Experiments
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