Code No: 24063 RR Set No.

2
II B.Tech II Semester Supplimentary Examinations,February 2010
PHYSICAL CHEMISTRY
Chemical Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
?????

1. (a) Define nernst distribution law.

(b) What are the conditions for the validity of the distribution law.
(c) Prove that C 1 /C2 = KD [2+6+8]

2. (a) What are the number of degrees of freedom, no. Phases for the following
system
i. One component
ii. Two component
iii. Three component [3+3+3]
(b) What are the advantages and limitations of phase rule [7]

3. Discuss about liquids in solids (gels). [16]

4. (a) What are enzymes. How they are classified according to reactions.
(b) Discuss the important factors that affect the enzyme-catalyzed reactions. [8+8]

5. (a) What is electrolysis? Explain the mechanism of electrolysis with example

(b) Explain the first law of faraday law of electrolysis. [10+6]

6. (a) Distinguish between lyophilic and lyophobic colloids

(b) Write short note on mechanical dispersion using colloidal mill. [8+8]

7. (a) The following mechanism has been suggested for the reaction
i. 2NO == N2 O2
ii. N2 O2 +H2 → N2 O + H2 O
iii. N2 O + H2 → N2 + H2 O
If the second step is rate-determining step what is rate law for this reaction?
(b) Explain the following
i. Upper and lower explosion limits
ii. Thermal explosion limits.
[8+8]

8. (a) What do you understand by the order and molecularity of a reaction? Derive
an expression for the velocity constant of first order reaction.

1
Code No: 24063 RR Set No. 2
(b) A solution of H2 O2 when titrated against KM nO4 solution at different time
intervals gave the following data
time ( min ) 0.0 10.0 20.0
volume of KM nO4 used for 10ml of H2 O2 23.8 14.7 9.1
Show that the decomposition of H2 O2 is first order reaction. [8+8]

?????

2
Code No: 24063 RR Set No. 4
II B.Tech II Semester Supplimentary Examinations,February 2010
PHYSICAL CHEMISTRY
Chemical Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
?????

1. (a) What are the number of degrees of freedom, no. Phases for the following
system
i. One component
ii. Two component
iii. Three component [3+3+3]
(b) What are the advantages and limitations of phase rule [7]

2. (a) What are enzymes. How they are classified according to reactions.
(b) Discuss the important factors that affect the enzyme-catalyzed reactions. [8+8]

3. (a) What is electrolysis? Explain the mechanism of electrolysis with example

(b) Explain the first law of faraday law of electrolysis. [10+6]

4. (a) The following mechanism has been suggested for the reaction
i. 2NO == N2 O2
ii. N2 O2 +H2 → N2 O + H2 O
iii. N2 O + H2 → N2 + H2 O
If the second step is rate-determining step what is rate law for this reaction?
(b) Explain the following
i. Upper and lower explosion limits
ii. Thermal explosion limits.
[8+8]

5. Discuss about liquids in solids (gels). [16]

6. (a) Define nernst distribution law.

(b) What are the conditions for the validity of the distribution law.
(c) Prove that C 1 /C2 = KD [2+6+8]

7. (a) Distinguish between lyophilic and lyophobic colloids

(b) Write short note on mechanical dispersion using colloidal mill. [8+8]

8. (a) What do you understand by the order and molecularity of a reaction? Derive
an expression for the velocity constant of first order reaction.

3
Code No: 24063 RR Set No. 4
(b) A solution of H2 O2 when titrated against KM nO4 solution at different time
intervals gave the following data
time ( min ) 0.0 10.0 20.0
volume of KM nO4 used for 10ml of H2 O2 23.8 14.7 9.1
Show that the decomposition of H2 O2 is first order reaction. [8+8]

?????

4
Code No: 24063 RR Set No. 1
II B.Tech II Semester Supplimentary Examinations,February 2010
PHYSICAL CHEMISTRY
Chemical Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
?????

1. (a) Distinguish between lyophilic and lyophobic colloids

(b) Write short note on mechanical dispersion using colloidal mill. [8+8]

2. (a) What do you understand by the order and molecularity of a reaction? Derive
an expression for the velocity constant of first order reaction.
(b) A solution of H2 O2 when titrated against KM nO4 solution at different time
intervals gave the following data
time ( min ) 0.0 10.0 20.0
volume of KM nO4 used for 10ml of H2 O2 23.8 14.7 9.1
Show that the decomposition of H2 O2 is first order reaction. [8+8]

3. (a) What is electrolysis? Explain the mechanism of electrolysis with example

(b) Explain the first law of faraday law of electrolysis. [10+6]

4. (a) The following mechanism has been suggested for the reaction
i. 2NO == N2 O2
ii. N2 O2 +H2 → N2 O + H2 O
iii. N2 O + H2 → N2 + H2 O
If the second step is rate-determining step what is rate law for this reaction?
(b) Explain the following
i. Upper and lower explosion limits
ii. Thermal explosion limits.
[8+8]

5. (a) What are enzymes. How they are classified according to reactions.
(b) Discuss the important factors that affect the enzyme-catalyzed reactions. [8+8]

6. (a) What are the number of degrees of freedom, no. Phases for the following
system
i. One component
ii. Two component
iii. Three component [3+3+3]
(b) What are the advantages and limitations of phase rule [7]

7. (a) Define nernst distribution law.

5
Code No: 24063 RR Set No. 1
(b) What are the conditions for the validity of the distribution law.
(c) Prove that C 1 /C2 = KD [2+6+8]

8. Discuss about liquids in solids (gels). [16]

?????

6
Code No: 24063 RR Set No. 3
II B.Tech II Semester Supplimentary Examinations,February 2010
PHYSICAL CHEMISTRY
Chemical Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
?????

1. (a) Distinguish between lyophilic and lyophobic colloids

(b) Write short note on mechanical dispersion using colloidal mill. [8+8]

2. (a) Define nernst distribution law.

(b) What are the conditions for the validity of the distribution law.
(c) Prove that C 1 /C2 = KD [2+6+8]

3. (a) What is electrolysis? Explain the mechanism of electrolysis with example

(b) Explain the first law of faraday law of electrolysis. [10+6]

4. (a) The following mechanism has been suggested for the reaction
i. 2NO == N2 O2
ii. N2 O2 +H2 → N2 O + H2 O
iii. N2 O + H2 → N2 + H2 O
If the second step is rate-determining step what is rate law for this reaction?
(b) Explain the following
i. Upper and lower explosion limits
ii. Thermal explosion limits.
[8+8]

5. Discuss about liquids in solids (gels). [16]

6. (a) What are the number of degrees of freedom, no. Phases for the following
system
i. One component
ii. Two component
iii. Three component [3+3+3]
(b) What are the advantages and limitations of phase rule [7]

7. (a) What are enzymes. How they are classified according to reactions.
(b) Discuss the important factors that affect the enzyme-catalyzed reactions. [8+8]

8. (a) What do you understand by the order and molecularity of a reaction? Derive
an expression for the velocity constant of first order reaction.

7
Code No: 24063 RR Set No. 3
(b) A solution of H2 O2 when titrated against KM nO4 solution at different time
intervals gave the following data
time ( min ) 0.0 10.0 20.0
volume of KM nO4 used for 10ml of H2 O2 23.8 14.7 9.1
Show that the decomposition of H2 O2 is first order reaction. [8+8]

?????