Download PTU M-Sc -Chemistry 1st Semester May 2019 51142 PHYSICAL CHEMISTRY I THERMODYNAMICS AND ELECTROCHEMISTRY Question Paper

Roll No.

Total No. of Questions: 19

Total No. of Pages : 02

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M.Sc (Chemistry) (Campus) (2015 to 2017) (Sem.-1)

PHYSICAL CHEMISTRY-I (THERMODYNAMICS AND ELECTROCHEMISTRY)

Subject Code : CHL-403

M.Code: 51142

Time: 3 Hrs.

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Max. Marks : 70

INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains SIX questions carrying FIVE marks each and students have to attempt ALL questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

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SECTION-A

1. Define chemical potential. Write down the expression for chemical potential.
2. What are non-ideal solutions? give examples
3. What is ionic strength and how it is measured?
4. What is triple point and eutectic mixture?

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5. What is the phase rule for two-component and three component systems?
6. Describe briefly Lindemann theory of a unimolecular reaction.
7. State stationary or steady state principle.
8. Explain the Debye-Falkenhagen effect.
9. What do you mean by concentration polarization, how it is different from overvoltage?

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10. Write down the Onsager equation for conductance of binary strong electrolyte.

SECTION-B

11. Describe the Debye-Huckel theory for determination of activity coefficients of electrolytic solutions.
12. Draw and describe the phase diagram for partially miscible three-liquid system having one partially miscible pair.
13. Define fast reactions. How fast reactions are studied by stopped flow method?

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14. Describe the Gouy-Chapman theory for electrical double layer.
15. Describe the primary salt and secondary salt effect on reaction rates.
16. Define polarography. Derive the Ilkovic equation.

SECTION-C

17. Define partial molar quantity and derive Gibbs-Duhem equation. How partial molar volume can be determined from method of intercept?

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18. Describe the Hinshelwood theory of unimolecular reactions. What are the limitations associated with this theory?
19. What is activity coefficient and mean ionic activity coefficient? Describe in detail Debye-Huckel theory of strong electrolytes.

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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