Chemical Engineering Thermodynamics - II Mid - II, November - 2014

1.BUBLP is to calculate P & yi at given values of
  • xi
  • T
  • xi and T
  • Overall composition
Answer: C
2.Equilibriumis a
  • Dynamic state of the system
  • Static condition
  • Two phase system
  • None of the above
Answer: B
3.For an endothermic reaction the equilibrium constant
  • Increases with increase in temperature
  • Decreases with increase in temperature
  • Decreases linearly with increase in temperature
  • Unaffected with increase in temperature
Answer: A
4.The equilibriumconstant of a reaction
  • Depends on temperature only
  • Depends on pressure only
  • Depends on temperature & pressure
  • Independent oftemperature & pressure
Answer: A
5.Reaction coordinate characterizes
  • Equilibriumrate
  • Extentof reaction
  • Equilibriumstate of system
  • None
Answer: B
6.The minimum number of phases that can exist in a system is
  • 0
  • 1
  • 2
  • 3
Answer: B
7.The value of activity coefficient for ideal gases is
  • zero
  • unity
  • infinity
  • negative
Answer: A
8.For an ideal gas fugacity coefficient is always
  • zero
  • unity
  • infinity
  • negative
Answer: B
9.Equation which relates pressure, volume and T of a gas is called
  • equation of state
  • gibbs- Duhem equation
  • ideal gas equation
  • none of the above
Answer: A
10.For a real gas fugacity coefficient is always
  • equal to one
  • less than one
  • greater than one
  • uncertain
Answer: B
11._______ is an example forliquid-liquid equilibrium
Answer: The solvent extraction
12.Phase rule variables are -------------------- properties
Answer: Intensive
13.In BUBLE P calculations the quantities which has to be calculated are _________ and ________
Answer: Yiand P
14.__________ equation gives the effect of temperature on the equilibrium constant and hence on equilibrium conversion
Answer: dlnK /dT=ΔHo/RT2
15.In VLE as pressure reduces at constant temperature the last drop of liquid disappear, it is known as ___________
Answer: Dew point
16.SLE refers to --------------------------.
Answer: Solid-liquid equilibrium
17.Fugacity of a species in anideal gas mixture is equal tothe __________ of the species
Answer: Partial pressure
18.Degree of freedom of the system ice-water –vapor will be …………………………
Answer: zero
19.The Gibbs free energy is defined as _________
Answer: G(p, T) = U + pV - TS
20.Redich-K wong equation is formulated as __________
Answer: