Assignment 6: First Practice Examination
Chem 242, Due: Feb. 1st/2nd
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Part 1: Multiple Choice - Please select the answer that is most correct for each p
Label the following radicals (using 1 4) as being most stable (1) to least stable (4). (1 point)
Propose a synthetic strategy for producing each of the following target molecules as the major
product using radical assisted halogenation.
1. For the IR spectrum of acetylene, a sp C-H stretch is observed at around 3300 cm-1 (see
spectra below), however a Carbon-Carbon triple bond stretch (typically about 2000 cm1) is not observed. Please explain why one peak is observed and the
a. Please provide an arrow pushing mechanism that will account for the formation of both of the
products shown above (2 points).
b. Show a hybrid resonance structure that would explain why meta addition is not observed in the
Assignment #2 (Due 1/30 or 1/31)
1. The following reaction has complications in that it produces a significant amount of side
product. Please indicate: (a) what the side product of this reaction would be and (b) an
alternative synthetic route to avoid pro
1. Fill in the boxes with major and minor products for each the reactions given below (1.5 points)?
For the following molecule below, predict the primary fragmentation patterns that would from
electron impact and suggest which peaks you wo
Assignment 1: Due 1/23 (Mon/Wed Section) or 1/24 (Tue/Thurs Section)
Fill in the Box with the best reagent for the following transformations (2 points):
Show how to synthesize both molecules 1 and 2 (exclusively) starting from 3Methylcyclohexenol (t
Indicate which of the following molecules are aromatic. For molecules that are not aromatic,
please explain why they are not aromatic (2 points).
Please provide an arrow-pushing mechanism for the following reaction (2 points).
Modified by ZRW on 1-12-15
Formal Write-up Report Guide
A. General Comments about Write-up Reports:
Grading Breakdown: Refer to the course syllabus.
Academic Dishonesty: While students are strongly encouraged to discuss the
experiments with fellow class
Experiment 1 Pre and Post lab Questions
1. Which would you expect to have a larger Rf value by TLC: the starting material, 9fluorenol, or the product of this reaction 9-fluorenone?
For the reaction you are about to run, what is the oxidant and
Jerrys Notes Chapter 7
Using the periodic table, we use the atomic mass listed. One atom of H weighs 1 amu AND
one mole of H weighs 1 gram
So, by looking at the periodic table, we can see that if I have 12 grams of car
In this lab, we used Phenolphthalein as an indicator of colorless acids and pink bases.
Sodium hydroxide is a base. When sodium hydroxide was added to the phenolphthalein, it
should turn pink.
Method and Materials:
Lab: Double Replacement
The goal of the double replacement lab is to observe several double replacement
reactions, determine the chemical equation for each reaction and record the products, and to
compare experimental observations to predicted outco
Lab: Formations of Esters
This lab tests a variety of esters with the reactions of organic acids and alcohol. We
perform the reaction as the Fisher esterification reaction. Esters, are compounds that frequently
have distinctive odors and are natural
This lab was about color additives. Color additives are found in food and cosmetics, and
many other things we use in daily life. Chromatography is an analytical technique commonly
used for separating a mixture of chemical
Midterm Review Assessment
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Part 1 of 8 -
Question 1 of 22
4.0/ 4.0 Points
2.0/ 2.0 Points
Which of the following would be considered a theory?
A.Hot air rises.
B.Gasoline has a very strong odor.
C.Glass is fragile.