Green and Environmental Chemistry (CHMS4102)
BSc, Chemistry - CHMS
Semester: Resit
Level: 400
Year: 2018
REPUBLIC OF CAMEROON THE UNIVERSITYOF
BAMENDA
Peace-Work-Fatherland
P. O. BOX 39
Bambili
School/Faculty: _FS__ Department:_chemistry_Lecturer(s):_Njoyim E.B. Tamungang
Course Code: _CHMS4102_______ Course Title: Green and Environmental chemistry
__
Date: _7/09/2018_______Halls: __ ________Duration: 2 Hours
Instructions:Answer all questions in the booklet.
1. A) What do you understand by the term Environment?
B) List the various compartments of the environment and
C) Make a sketch of the layers that make up the atmosphere writing down the major equations of the
reactions that take place in each of the layers. 20 mks
2. Explain briefly the following terms:
a) Smog b) Climate change
c) Alkalinity of water d) Toxicology e) Synergism 15 mks
3. A. Use an annotated sketch only to illustrate The major aquatic chemical processes
B. Use an annotated sketch to clearly illustrate natural reactions and transport phenomena involved in the
cycling of elements in the environment 20 mks
4. The nature of chemical species in water is usually a function of both pE and pH. A good example of this is
shown by a simplified pE-pH diagram for iron in water. . Assuming that iron is in one of the four forms of Fe
2+
ion, Fe
3+
ion, solid Fe(OH)
3
,or solid Fe(OH)
2
, draw an annotated sketch of a simplified pE-PH diagram of
Iron including equations wherever possible. 10 mks
5. If all the energy leaving the sun were to reach the earth’s surface, life will cease to exist. Justify this
statement as much as you can. 5 mks
the reward of hardwork awaits all who make an effort on earth NET sept 2018
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