DOC PREVIEW
UK CHE 230 - Exam

This preview shows page 1-2 out of 5 pages.

Save
View full document
View full document
Premium Document
Do you want full access? Go Premium and unlock all 5 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 5 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 5 pages.
Access to all documents
Download any document
Ad free experience

Unformatted text preview:

Cover Sheet! EXAM 3b CHEM230-001 SPRING 2005 PRINT your name legibly on the line below. PRINT your student id number on the line below.2005 Organic Chemistry CHE230-001 EXAM 3b Page 1 of 6 Name: _______________________________ Student ID No:_____________________ First: You are allowed to have a writing utensil, a calculator and molecular model set at your seat. Please put away all other materials. Second: Place your student identification on your desk. A proctor will come around to check your ID. Put your name and number on your test? Third: Quickly read through the entire exam. Your goal, as always, is to score as many points as possible. Do not waste time on problems that you can’t do if there are easy questions to do first. Fourth: It is critically important that your answers be written in a clear, unambiguous manner. s in which your intentions are unclear may not receive credit. SHOW YOUR WORK! Fifth: READ THE INSTRUCTIONS FOR EACH PROBLEM. answer each question Problem Number Points possible Score 1a. 10 _____ 1b. 20 _____ 1c. 10 _____ 1d. 10 _____ 2a. 10 _____ 3a. 10 _____ 4a. 10 _____ 4b. 5 ______ 4c. 5 ______ 5. 10 ______ 6. 5 ______ ------------------------------------------------------------------------------------- Total 105 _____2005 Organic Chemistry CHE230-001 EXAM 3b Page 2 of 6 1. Use the figure below to answer all the questions in 1a-d. HBrCH2Cl2(solvent)BrAB a. (10 pts.) In general what is the difference between a transition state and an intermediate in a reaction mechanism? _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ b. (20 pts.) Carefully draw out the reaction energy diagram for the reaction above in the box below. LABEL the reaction diagram with A and B ABOVE and LABEL ALL INTERMEDIATES Im(1 . . .) and ALL TRANSITION STATES Ts(1 . . . ). b.2005 Organic Chemistry CHE230-001 EXAM 3b Page 3 of 6 c. (10 pts.) What structural/ electronic feature(s) is making the reaction go from left to right? In other words, why is the reaction exothermic? The instructor repeated this multiple times in lecture. _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ d. (10 pts.) Is the rate for the reaction A → B going to be unimolecular or bimolecular? ________. On the concentration of which species will this rate depend? ______________. 2. O3CH2Cl2(solvent) a. (10 pts.) Put the product at the right of the arrow above. 3. BH32) H2O2, NaOH(aq)ether1) a. (10 pts) Put the product at the right of the arrow above.2005 Organic Chemistry CHE230-001 EXAM 3b Page 4 of 6 4. Br2CH2Cl2 a. (10 pts) Put the product at the right of the arrow above. There is stereochemistry to consider! b. (5 pts) Is the addition of Br atoms syn or anti? _____________ c. (5 pts) Why are these reactions not so apt to rearrange? _________________________________________________________________ 5. 1) hexane (solvent)2) O2tBu2 a. (10 pts) Put the product at the right of the arrow above. The reaction conditions are such that methylystyrene (material at left) is very concentrated. The reaction will result in polymerization. Draw a few units of the polymer. 6. (5 pts) How are cations and radicals


View Full Document

UK CHE 230 - Exam

Documents in this Course
Exam 3

Exam 3

5 pages

Exam

Exam

9 pages

Exam

Exam

5 pages

Exam

Exam

5 pages

Exam

Exam

10 pages

Exam

Exam

10 pages

Load more
Download Exam
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Exam and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Exam 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?