DISTANCE EDUCATION
M.Sc. (Chemistry) DEGREE EXAMINATION, MAY 2018.
PHYSICAL CHEMISTRY — I
(2008 Onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
x 20 100)
1. State the second law of thermodynamics. Discuss the need of II law.
Define entropy. Explain the entropy change in reversible process.
Derive Gibbs-Helmholtz equation.
2. Derive Debye-Huckel Onsagar equation.
Explain Butler-Volmer equation in detail.
Write a note on electrochemical cells.
3. Discuss the postulates of quantum mechanics in detail.
Give the application of quantum chemistry to particle in a one-dimensional box.
4. Explain the chemical kinetics of reversible reactions.
Write a note on kinetic isotopic effect.
Discuss the Lindmann theory of unimolecular reaction in detail.
Sub. Code
13
DE-4069
2
Sp 1
5. State and explain fluorescence and phosphorescence.
What is quantum yield? How will you determinequantum yield experimentally?
Explain the photochemical decomposition of HI.
6. Discuss the Nernst heat theorem in detail.
What is fugacity? How will you determine it?
Explain the activity and activity coefficient.
7. Explain the terms transport number and ionic
mobilities.
Give the applications of conductivity measurement.

Derive Debye-Huckel limiting law.
8. Derive the Schrodinger wave equation.
Discuss the solar energy conversion.
Write a note on Flash Photolysis.