BIO CHEMICAL THERMODYNAMICS Question Papers (Supple, February 2007, R05)

SET :1

1. (a) Define any two of the following:-
i. Energy
ii. Property
iii. Work
iv. Equilibrium
(b) Differentiate between intensive and extensive properties with suitable examples. [8+8]

2. (a) Name the two conditions, which every equation of state should satisfy
(b) What are the units of the Vanderwaals constant a and b. [8+8]

3. A particular thermodynamic system has the following the equations of state.
1/T = 5NR/2U ; P/T = NR/V. obtain the third equation of state of the system. [16]

4. (a) Discuss the importance of fugacity in thermodynamics.
(b) Discuss fugacity and fugacity coefficient for pure species. [16]

5. Discuss solid liquid equililbrium and their applications in brief. Show that for SLE
xiγℓi = Ziγsi ψs (all i)
where ψs = fsi/fℓi. [16]

6. (a) What is Le chatteliers principle? Give suitable examples to explain above principle.
(b) Discuss the effect of insert gas addition on conversion for various situations. [8+8]

7. How EMP pathway related to cell wall components. [16]

8. Estimate the heat of combustion of Pseudomonas fluorescens growing in glucose medium [16]


SET :2

1. (a) Define any two of the following:-
i. Energy
ii. Property
iii. Work
iv. Equilibrium
(b) Differentiate between intensive and extensive properties with suitable examples. [8+8]

2. (a) What is critical point? Define critical temperature and critical pressure.
(b) what are real gases? Do you expect real gases to obey ideal gas law. Give suitable explanation. [8+8]

3. Show that for an ideal gas, (∂E/∂V)T = 0. [16]

4. Develop a general equation for calculation of in ˆφi values from compressibility factor data.[16]

5. Prove the following.
(a) fℓi = fsati = φsati Psati
(b) fi = φsati Psati exp[V ℓi (P−Psat)]/R.T . [8+8]

6. (a) What is Le chatteliers principle? Give suitable examples to explain above principle.
(b) Discuss the effect of insert gas addition on conversion for various situations. [8+8]

7. (a) Explain the Gaden classification from stoichiometric point of view the product formation in fermentation processes.
(b) The following stoichiometric equation describes penicillin systhesis:

1.5 Glucose + H2SO4 + 2NH3 +phenylacetate -----> PencilliumG + CO2 + 8H2O

the theoretical yield of pencillium is 1.2g (gram of glucose). Find out the molecular weight of pencillium G. [16]

8. Discuss in detail the Energy Source dissimilation. [16]


SET :3

1. A system is taken from state-1 to state-2 along a path A. During this process it received 225 KJ energy as heat and does 125KJ work. if the system is taken from state 2 to state 1 by a different path B, it is necessary to spend 175KJ work on the system. Determine the heat inter action along the path B. Suppose the system is restored to state 1 from state 2 by on adiabatic path C, how much work has to the done on the system? [16]

2. (a) What is ideal gas? Name the two-basic assumptions, which were made use of in deriving the ideal gas equation of state from kinetic theory arguments.
(b) Define thermodynamic properties, Classify the thermodynamic properties. What is the use of such classification. [8+8]

3. (a) Give an example of a fundamental relation.
(b) What is an equation of state? How many equations of state are there for a single component of simple compressible substance? [6+10]

4. (a) Discuss the importance of fugacity in thermodynamics.
(b) Discuss fugacity and fugacity coefficient for pure species. [16]

5. Show that multiple phases at the same T and P are in equililinium, when fugacity of each Constituent species is the same in all phases ie. f^α1 =f^βi = − − − − − − = f^Πi (i = 1.2,− − −N) [16]

6. (a) Define reaction coordinate. What is its usefulness?
(b) For a system in which the following reaction occurs CH4 + H2o ---> CO +3H2,assume there are present initially 2mol CH4, 1molH2o, 1mol Co and4molH2. Determine expressions for the mole fraction yi as function of Є . [16]

7. (a) Explain the Gaden classification from stoichiometric point of view the product formation in fermentation processes.
(b) The following stoichiometric equation describes penicillin systhesis:

1.5 Glu-cose + H2SO4 + 2NH3 +phenylacetate -----> PencilliumG + CO2 + 8H2O

the theoretical yield of pencillium is 1.2g (gram of glucose). Find out the molecular weight of pencillium G. [16]

8. Explain the heat production and oxygen consumption for several microorganism grown in different media. [16]


SET :4

1. (a) Classify the following into intensive and extensive property with suitable
explanation:-
i. Total mass,
ii. Volume
iii. Molecular weight
iv. Density
v. Heat
vi. Temperature.
(b) Define reversible process with suitable example. [9+7]

2. (a) What is ideal gas? Name the two-basic assumptions, which were made use of in deriving the ideal gas equation of state from kinetic theory arguments.
(b) Define thermodynamic properties, Classify the thermodynamic properties. What is the use of such classification. [8+8]

3. (a) Present the four Maxwell relations, which are commonly used
(b) State the energy minimum principle. [8+8]

4. Prove that μigi = G−igi = G−igi + RT in Xi where terms have usual meaning. [16]

5. Show that when Lewis Randall rule is valid for one species in a linery solution, the Henrys law lis is valid for the other one. [16]

6. For the equililnium state of a chemical reaction, show that .−RT lnK = ΔGo [16]

7. Relation between TCA and lipid synthesis. [16]

8. Estimate the heat of combustion of Pseudomonas fluorescens growing in glucose medium [16]