Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem New 2163611 Chemical Engineering Thermodynamics And Kinetics Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2163611 Date:16/05/2019
Subject Name:Chemical Engineering Thermodynamics & Kinetics
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain the concept of Internal Energy 03
(b) Mention the distinctions between reversible and irreversible process 04
(c) Describe the first law of thermodynamics for a flow process. 07
Q.2 (a) A gas occupying a volume of 0.2 m
3
at a pressure of 1 bar is expanded to a
final pressure of 7.0 bar. The pressure of gas varies according to the relation
P = 1200V + b, where P is in kPa and V is in m
3
and b is constant. Calculate
work done by the gas.
03
(b) List thermodynamic properties of an ideal gas 04
(c) With a neat diagram explain PV diagram for pure fluids. 07
OR
(c) 1 kg of certain gas is compressed reversibly according to a law PV = 0.25
where P is in bar and V is in m
3
/kg. the final value is 1/4
th
of initial volume.
Find the work done on the gas.
07
Q.3 (a) One kilo mol of CO2 occupies a volume of 0.381m
3
at 313 K. Compare the
pressures predicted by (i) Ideal gas equation (ii) Vanderwaals equation
03
(b) Derive the expression for work done by an ideal gas in a adiabatic process. 04
(c) Estimate the value of Vanderwaals constants ?a? and ?b? interms of critical
temperature and pressure.
07
OR
Q.3 (a) A reservoir at 600 K is transferring 1000 J of heat to an engine that is
operating in Carnot cycle. The engine rejects heat to a reservoir at 300 K.
Determine the thermal efficiency of the cycle and work done by the engine.
03
(b) Show that violation of Kelvin statement results in violation of Clausius
statement of Second law of Thermodynamics.
04
(c) With help of thermodynamic diagram describe the various process involved
in a Carnot Cycle.
07
Q.4 (a) Write a short note on entropy and irreversibility 03
(b) Describe the classification of themodynamic properties 04
(c) Establish the following Maxwells correlation
(i) (
????
????
)
?? = ? (
????
????
)
?? (ii) (
????
????
)
?? = ? (
????
????
)
??
07
OR
Q.4 (a) Find the fugacity coefficient at 1, 5 and 10bar for a gas that follows equation
of state PV = RT(1 ? 0.00513P)where P is the pressure in bar.
03
(b) Define an ideal solution. Substantiate the reasons resulting for non-ideality
in solutions.
04
(c) Mention various thermodynamic diagrams. Explain any one with a neat
diagram.
07
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2163611 Date:16/05/2019
Subject Name:Chemical Engineering Thermodynamics & Kinetics
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain the concept of Internal Energy 03
(b) Mention the distinctions between reversible and irreversible process 04
(c) Describe the first law of thermodynamics for a flow process. 07
Q.2 (a) A gas occupying a volume of 0.2 m
3
at a pressure of 1 bar is expanded to a
final pressure of 7.0 bar. The pressure of gas varies according to the relation
P = 1200V + b, where P is in kPa and V is in m
3
and b is constant. Calculate
work done by the gas.
03
(b) List thermodynamic properties of an ideal gas 04
(c) With a neat diagram explain PV diagram for pure fluids. 07
OR
(c) 1 kg of certain gas is compressed reversibly according to a law PV = 0.25
where P is in bar and V is in m
3
/kg. the final value is 1/4
th
of initial volume.
Find the work done on the gas.
07
Q.3 (a) One kilo mol of CO2 occupies a volume of 0.381m
3
at 313 K. Compare the
pressures predicted by (i) Ideal gas equation (ii) Vanderwaals equation
03
(b) Derive the expression for work done by an ideal gas in a adiabatic process. 04
(c) Estimate the value of Vanderwaals constants ?a? and ?b? interms of critical
temperature and pressure.
07
OR
Q.3 (a) A reservoir at 600 K is transferring 1000 J of heat to an engine that is
operating in Carnot cycle. The engine rejects heat to a reservoir at 300 K.
Determine the thermal efficiency of the cycle and work done by the engine.
03
(b) Show that violation of Kelvin statement results in violation of Clausius
statement of Second law of Thermodynamics.
04
(c) With help of thermodynamic diagram describe the various process involved
in a Carnot Cycle.
07
Q.4 (a) Write a short note on entropy and irreversibility 03
(b) Describe the classification of themodynamic properties 04
(c) Establish the following Maxwells correlation
(i) (
????
????
)
?? = ? (
????
????
)
?? (ii) (
????
????
)
?? = ? (
????
????
)
??
07
OR
Q.4 (a) Find the fugacity coefficient at 1, 5 and 10bar for a gas that follows equation
of state PV = RT(1 ? 0.00513P)where P is the pressure in bar.
03
(b) Define an ideal solution. Substantiate the reasons resulting for non-ideality
in solutions.
04
(c) Mention various thermodynamic diagrams. Explain any one with a neat
diagram.
07
2
Q.5 (a) What is meant by Azeotropes. Mention its various types 03
(b) An equimolar solution of benzene and toluene is totally evaporated at a
constant temperature of 363 K. At this temperature the vapour pressures of
benzene and toluene are 135.4 and 54 kPa respectively. What are the
pressures at beginning and at end of vaporization process?
04
(c) Describe T-x-y diagrams mentioning the effect of pressure on T ? x ? y 07
OR
Q.5 (a) Derive the relationship between equilibrium constant and standard free
energy change?
03
(b) Discuss the criteria for Chemical reaction Equilibria? 04
(c) The standard heat of formation and standard free energy of formation of
ammonia at 298K are -46100 J/mol and -16500 J/mol. Calculate the
equilibrium constant for the reaction
N2 + 3H2 2NH3 at 500 K assuming that the standard heat of reaction is
constant in the temperature range 298 to 500 K
07
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This post was last modified on 20 February 2020