Sch2107:Inorganic Chemistry I Question Paper
Sch2107:Inorganic Chemistry I
Course:Bachelor Of Science In Public Health
Institution: Meru University Of Science And Technology question papers
Exam Year:2011
QUESTION ONE – (30 MARKS)
a) Formaldehyde, CH2O is a tissue preservative. What hybridization does the carbon atom have? (2 Marks) b) Give the IUPAC names of the following compounds. (5 Marks)
2
i)
CH3
ii) CH3CH2CHCH3
CH3
iii) CH3CH2CH2COH
O
iv) CH3CH2CH2CCH3
v) CH3CH2CHCH2C
O
O
OH
CH2
CH3 c) Draw the structures for two isomers with the molecular formula, C2H7N. (4 Marks) d) Name the family of the compounds with the following functions groups and give a specific example in each case. (8 Marks)
3
i)
ii) C C
O
C
iii)
iv) C N
C C
C N
..
e) Alkanes with even numbers of carbon atoms melt at higher temperatures than alkanes with odd numbers of carbon atoms. Give reason(s). (3 Marks) f) Draw a sketch of the electron density of a 2S orbital. (4 Marks) g) Briefly describe the two major classes of isomers. (4 Marks)
QUESTION TWO (20 MARKS)
a) Explain why carbon is a unique element in the periodic table. (5 Marks) b) Draw line - bond structures of the following compounds and show all the non bonding electrons. i. Ethanol, CH3CH2OH ii. Methylamine, CH3NH2 iii. Hydrogen sulfide, H2S (6 Marks) c) Draw the structural formulae of the following compounds. i. Methyl ethyl ether ii. t- butylbenzene iii. 3-bromo-2-pentanol iv. Ethyl-2-methylpropionate. (8 Marks)
4
d) What is hydro cracking? (1 Mark)
QUESTION THREE (20 MARKS)
a) What is the molecular formulae of the following compounds. (4 Marks)
i)
ii)
iii)
iv)
NO2
CH2CH3
b) Explain the mechanism involved in the chorination of methane. (8 Marks) c) Give the structure and the name of the products for the following reactions.
5
i) + Cl2
ii)
H2,PtO2
CH3CO2H
iii)
HH
+ Br2
iv) CH3CH2CH2CH
O
Acetone, 00C
HC CH
H H
CH3
CH3
CrO3,H3O+
(8 Marks)
6
QUESTION FOUR (20 MARKS)
a) Briefly describe the mechanism involved in the hydrogenation of alkenes. (8 Marks) b) Aldehydes and carboxylic acids are formed by oxidation of primary alcohols and ketones are formed when secondary alcohols are oxidized. Give the name and formula for the alcohol that, when oxidized, gives the following products. i. CH3CH2CH2CHO ii. 2-hexanone. (4 Marks) c) Using a relevant example, briefly describe the mechanism of hydration of alkenes. (6 Marks) d) Draw and name the two common conformations of cyclohexane. (2 Marks)
More Question Papers