This download link is referred from the post: SGBAU B.Tech Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university
TSUANKET Second Semester Examination
11708 : Applied Physical Chemistry - I
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AW -2931 Pages: 3
Time : Three Hours Max. Marks : 80
Notes:
- Answer three questions from Section A and three questions from Section B.
- Due credit will be given to neatness and adequate dimensions.
- Assume suitable data wherever necessary.
- Diagrams and chemical equations should be given wherever necessary.
- Use of pen Blue/Black ink/refill only for writing the answer book.
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SECTION - A
-
- Define activity coefficient and describe the experimental method of determination of activity and activity coefficient. 6
- Explain in brief, Heisenberg's uncertainty principle. 4
- What is an ideal solution ? Write the statement of Raoult's law. 3
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OR
-
- Discuss the application of Schrodinger equation for determination of energy of a particle confined in one dimensional potential well. 6
- Show that, λ = h/p, where h is plank constant, λ is wave length and p is momentum. 4
- Define: 3
- Rigid rotator
- Zero point energy and
- Wave number
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-
- State the law of corresponding state and deduce the reduced form of Van-der-Waals equation. 4
- Define the terms : 3
- Mean free path
- Co-volume of gas
- Compressibility factor
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- Derive an equation PV = 1/3 mnc2 6
OR
-
- Discuss the Maxwell Boltzmann's law of distribution of molecular speed and express the formula for average velocity. 6
- Write the assumptions of kinetic theory of gases. 4
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AW -2931 1 P.T.O
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Calculate the pressure exerted by 1 mol of gas at 300 k having volume 1.32 dm3 using Van-der-Waal's equation. The Van-der-Waal's constants are, a = 3.59 dm6 atm mol-2 and b=0.0427 dm3 mol-1 (R =0.08206 dm3 atm k-1 mol-1).
-
- What is collision frequency ? Derive an expression for collision number. 6
- Define: 4
- Root mean square velocity
- Average velocity
- Most probable velocity
- Collision diameters
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- Calculate r.m.s and average speed of oxygen molecule at 273 k. (R=8314 kgm2 s-2 k-1 mol-1) 3
OR
-
- Express the three critical constants in terms of Van-der-Waal's constants using Van-der-Waal's equation. 6
- Discuss the heat conduction in gases. 4
- The density of carbon monoxide at 0°C at 1 atm is 1.2504 kg m-3. Calculate the average and most probable speeds. 3
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SECTION-B
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-
- Give the difference between order and molecularity. 4
- Define zero order reaction with suitable examples. 3
- Derive an integrated rate equation of second order reaction for equal initial concentration of reactants. 6
OR
-
- Discuss the effect of following factors on reaction rate : 6
- Surface area of reactant
- Temperature
- Show that, if one of the reactant is present in large excess in reaction vessel, the second order reaction follows first order kinetic equation. 4
- In a second order reaction, where the initial concentration of the reactants is the same, half of the reactants are consumed in 6 minutes. If the specific reaction rate is 5x10-2 mol-1 dm3 min-1, what is the initial concentration of the reactants. 3
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- Discuss the effect of following factors on reaction rate : 6
-
- Discuss the Ostwald isolation method. 6
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AW -2931 2
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-
- In first order reaction, the concentration is reduced to 1/4 of its initial value in 60 minutes. Calculate the rate constant of the reaction. 4
- In a first order reaction, the initial concentration is halved, the half-life period is 25 minutes. What is order of reaction ? 3
- What is energy of activation ? How does it calculate from Arrhenius equation ? 6
OR
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-
- Discuss the following methods of determination of order of reaction. 6
- Van't - Hoff's differential method.
- Fractional change method.
- Write the limitations of Integration method. 4
- The specific rate constants of second order reaction are 0.03466 mol-1 dm3 min-1 and 0.13864 mol-1 dm3 min-1 at temperatures 300 k and 350 k respectively. Calculate energy of activation (R = 8.314J) 3
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- Discuss the following methods of determination of order of reaction. 6
-
- Define the following thermodynamic systems and processes. 6
- Open system
- Isolated system
- Adiabatic process
- Isobaric process
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- Write any two statements of second law of thermodynamic. 4
- Define Gibb's free energy and explain the spontaneity of chemical reaction. 3
OR
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- Define the following thermodynamic systems and processes. 6
-
- State the first law of thermodynamics and derive its mathematical equation. 6
- What do you mean by state function ? Give any three examples of state functions. 4
- Derive Gibb's Helmholtz equation. 3
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AW -2931 3
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This download link is referred from the post: SGBAU B.Tech Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university