14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS

SCHOOL OF SCIENCE AND TECHNOLOGY

MARCH/APRIL 2014 EXAMINATION

COURSE CODE: CHM 305

COURSE TITLE: ORGANIC CHEMISTRY III

TIME ALLOWED: 2 1/2 HOURS

INSTRUCTION: ANSWER QUESTION 1 AND ANY OTHER FOUR QUESTIONS

1a) State the condition(s) for the following reaction

i)

ii)

iii)

iv)

State the product(s) formed from the following reactions

v)

vi)

vii)

2a) Differentiate between isomerism and metamerism.

2b) Discuss the general methods of preparing Esters.

2c) Explain transesterification.

3a) Explain the physical properties of aldehydes and ketones.

3b) Discuss the reaction that occurs when ozone is bubbled through a solution of an alkene in 1,1,1-

trichloromethane followed by hydrolysis in the presence of zinc and ethanoic acid.

4a) Discuss the formation of β-Keto esters.

4b) Explain 1,4-nucleophilic Addition using specific reaction.

5a) Classify Heterocyclic Compounds into their main categories.

5b) Discuss the reaction of Thiophene with Organometallic compounds.

5c) State the test for Thiophene.

6a) Discuss the preparation of Pyridine from Pentamethylenediamine hydrochloric acid.

6b) Highlight the physical properties of Pyridine.

6c) Discuss the Nucleophilic substitution of Pyridine.

7a) State the physical characteristics of dicarboxylic acids

7b) Discuss the Preparation of Malonic Esters.

For the 2015 – till date past questions for this course CLICK HERE

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