Total No. of Questions 12] [Total No. of Pages 02
M.Sc. DEGREE EXAMINATION, MAY 2017
(First Year)
CHEMISTRY
Physical Chemistry
Time 3 Hours Maximum Marks 70
SECTION A (4× 7½ 30)
Answer any Four questions
Q1) Explain the significance and concept of Gibb's-Helmholtz function.
Q2) Write about the entropy changes in irreversible processes.
Q3) Explain Radioactive secular equilibrium and transient equilibrium with one example
each.
Q4) Write about Schottky and Frenkel defects in solids.
Q5) How do you measure the emf of an electrochemical cell.
Q6) Draw and explain Langmuir adsorption isotherm.
Q7) Draw and explain Jablonsky diagram.
Q8) Explain the effect of temperature on reaction rates.
SECTION B (4× 10 40)
Answer all the questions choosing one from each unit
Unit I
Q9) Describe Classius-Clapeyron equation.
OR
Explain the variation of chemical potential with respect to temperature and
pressure.
Unit II
Q10) Write the applications of radioisotopes in reaction mechanisms and medicine.
OR
Make a comparison between the properties and applications of conductors and
semiconductors.
Unit III
Q11) Write the determination of concentration of a cell without transference.
OR
How do you determine surface area of solids by BET method?
Unit IV
Q12) Explain Lindmann's theory of reaction rates.
OR
Explain the mechanism of Acid-Base catalysis reaction with an example.