Designer Lab Proposal Form
Please model your procedure after the Competing Nucleophiles Lab. Scale your reaction to run in
a 50, 100, or 250 mL pear-shaped or round bottom flask. (50 or 100 mL is preferred.)The total
volume of your reaction mixture (inclu
5 .12 PRACTICE PROBLEMS FOR
There are a lot of problems here. They
are representative of the types of
long questions that will be on the
A key for the practice problems will be
posted next Wednesday.
5.12 PRACTICE EXAM #4
PAGE 1 Short questions 1-8; 3 points each)
1. Estimate the pKa of the proton indicated.
2. Which of the following compounds is likely to adopt a planar conformation?
3. Which of the followi
5.12 Practice Exam #3
Prof. B. Imperiali
Exam will be held on Monday April 14th at noon.
Notes and calculators will not be allowed in the exam but you will be provided with a periodic table and you may bring use molecular models to use. The exam will cove
Practice Exam #1
0 Midterm exam #1 will be held on Friday, February 21,
0 Notes and calculators will not be allowed in the exam.
0 You will be free to use molecular models during the exam.
0 You will be give
Practice Exam #1
Midterm exam #1 will be held on Friday, February 21, from 121pm. Notes and calculators will not be allowed in the exam. You will be free to use molecular models during the exam. You will be given a peri
CHEM 241-601, U. Penn
Hour Exam I answers
October 17, 2006
1.(20) Draw Newman projections for each of the unique rotational conformations of
1,1,2-tribromobutane (look down C1-C2, 60o rotations) and plot the potential energy
diagram on th
Scotomas are 'mental blind spots' which occur when you miss the obvious. The easiest example
of this is when you're looking for something you've lost the more you look for it the harder it
can be to find it. Someone else then comes along and finds it in a
Problem Set #2, 5.12 Spring 2003
Due Tuesday, February 18, 4pm
1. Draw a molecular orbital picture for each of the following molecules. Include all bonding and
non-bonding orbitals, and label each clearly.
2. a) Assign the appropri
5.12 Spring 2003
Review Session: Exam #1
I. Review of Lewis Bonding Theory A. Ionic Bonding B. Covalent Bonding 1. Multiple Bonding 2. Formal Charge C. Short-Hand for Chemists 1. Line-Angle Formulas 2. Dashes and Wedges 3. Curved Arrow Formalism II. Reso
Problem Set #4, 5.12 Spring 2003
Due Monday, March 10, 4pm
1. a) Label each pair as enantiomers, diastereomers, or same molecule. b) Label each stereocenter with its R or S configuration.
F H D
OH HO O Br CH3
Br CH3 OH
Prof. B. Imperiali CHEM 5.12 PROBLEM SET #7 (this really is PS#7 and the last one was actually PS#6!) Due in Friday April 11th at 4 pm
1. (3 points total) a. For the following compounds estimate the pKa of the hydrogen indicated by the arrow and rank the
Problem Set #6, 5.12 Spring 2003
Due Monday, March 31, 4pm
1. a) Rank the following series of molecules based on reactivity in an SN2 reaction (NaI/acetone).
(1= fastest SN2, 4= slowest SN2)
b) Rank the fol
Prof. B. Imperiali
PROBLEM SET #5 - Due in Friday April 4th at 4 pm
1. (2 points) Assign Z or E nomenclature to the alkenes shown below
2. (4 points) Propose a detailed stepwise mechanism for the reaction shown below
5.12 Prof. B. lmperiali
Practice Exam #3
Exam will be held Monday April 14th at noon.
Notes and calculators will not be allowed in the
exam but you will be provided with a periodic
table and you may bring use molecular models
The exam will cov
Title: Part 1 of 3-Part Dual Unknown Lab
Name: Iulia Tapescu
Partner(s): Kara Lu
Lab Day: Wednesday 12 Sept
To asses state, odor and color and to determine the melting and the boiling point, respectively, of two