DISTANCE EDUCATION
M.Sc. (Chemistry) DEGREE EXAMINATION, MAY 2017.
PHYSICAL CHEMISTRY — II
(2008 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
20 100)
1. Estimate the rotational partition function of HCl at
and
Use concepts of statistical thermodynamics to
describe the molecular features that lead to the
equations of state of perfect and real gas.
2. Illustrate the wave mechanical treatment of a
particle in a one-dimensional box.
Write note on Slater determinant.
3. Describe the great Orthogonality theorem.
What are the symmetry operations in the point
group C2v? Identify a molecule that belongs to the
group. By examining the effect of sequential
application of the various symmetry operations in
the group, construct the group multiplication table.

Sub. Code
23
DE-665
2
wk4
4. Derive an equation for the variation of rate constant
with ionic strength.
Discuss the Hammet and Taft equation for various
substituents.
5. Show that the BET equation reduces to the
Langmuir isotherm when p0 p .
Prove that the bimolecular surface reaction order
for one molecule and for another molecule.
Prove that the bimolecular surface reactions order
increases from 1 to 2.
6. Consider an electron moving in one dimensional box
of 3 Aº width. Calculate the transition in energy
when electron jumps from second orbit to first orbit.
Also calculate the wavelength of the emitted
radiation.
Discuss the features, advantages and limitations of
the Michaelis-Menten mechanism of enzyme action.

7. State and derive the mathematical statement of
Boltzmann distribution law.
Write note on Temkin isotherm.
How does HMO method apply to butadiene
molecule?
8. Write notes on
Assembly and ensemble
Negative absolute temperature
Micro and macro state
Fermi statistics. 5 20)