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Practice Problems Set 5

This document contains an 11 question practice problem set for an Introduction to Organic Chemistry course taught by Dr. Syed M. Saad. The questions cover topics like ranking alkene stability based on heat of hydrogenation data, assigning cis/trans and Z/E configurations, predicting products of reactions between alkenes/alkynes and reagents like H2, Br2, HBr, and O3, drawing complete reaction schemes, and writing IUPAC names. The practice problem set provides examples to help students learn fundamental concepts in organic chemistry.

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Kishwer Nishat
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372 views3 pages

Practice Problems Set 5

This document contains an 11 question practice problem set for an Introduction to Organic Chemistry course taught by Dr. Syed M. Saad. The questions cover topics like ranking alkene stability based on heat of hydrogenation data, assigning cis/trans and Z/E configurations, predicting products of reactions between alkenes/alkynes and reagents like H2, Br2, HBr, and O3, drawing complete reaction schemes, and writing IUPAC names. The practice problem set provides examples to help students learn fundamental concepts in organic chemistry.

Uploaded by

Kishwer Nishat
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Course Instructor: Dr. Syed M.

Saad

INTRODUCTION TO ORGANIC CHEMISTRY

Practice Problems Set 5:

1. Rank the following alkenes in order of decreasing stability.

2. Following is the data of heat of hydrogenation of alkenes A, B, C, D, and E. Rank these alkenes in order of
increasing stability.

Alkene Heat of Hydrogenation; kJ/mol


A -221.5
B -210.0
C -250.6
D -345.2
E -195.5

3. Assign the cis/trans configuration to each of the following alkenes.

4. Assign the Z/E configuration to each of the following alkenes.

5. How many moles of oxygen gas will be required to completely ignite the following alkenes and alkynes?

i. 1 mol C40H80
ii. 2 mol C24H46
iii. 1 mol henicosatrict-50-ene
iv. 1 mol nonanonacont-9-yne

6. Draw the product(s) for the following ozonolysis reactions.

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Course Instructor: Dr. Syed M. Saad

7. What starting material(s) is/are to be chosen for the synthesis of following aldehydes and ketones through
ozonolysis?

8. Draw the structure of products that are formed when 2-methylbut-1-ene reacts with each of the following reagents.

i. H2, Pt

ii. HBr

iii. H2O, catalytic H2SO4

iv. OsO4, then NaHSO3/H2O

v. Br2 in CCl4

vi. Br2 in H2O

vii. Br2 in EtOH

viii. O3, then Zn

ix. mCPBA in DCM

9. Draw the structure of products that are formed when hex-3-yne reacts with each of the following reagents.

i. One molar equivalent of Br2

ii. Two molar equivalents of Br2

iii. One molar equivalent of HBr

iv. Two molar equivalents of HBr

v. One molar equivalent of H2 and Lindlar catalyst

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Course Instructor: Dr. Syed M. Saad

vi. H2(in excess)/Pt

10. Complete the following reactions by drawing the final products only.

11. Draw the chemical structure or write the IUPAC name, whatever asked, in the designated space provided.

Chemical Structure IUPAC Name

2,11-dimethyldodeca-2,6,10-trien-4,8-diyne

9-bromo-8-chloro-5-ethoxy-7-fluoro-10-iodo-6-
methoxy-4-nitroundeca-5,9-dien-2-yne

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