Chemical Process Calculation Questions and

II

Question 1
Marks : +2 | -2
Pass Ratio : 100%
What is the Enthalpy change for a 20 Kg mole Nitrogen gas that is heated from 100 K to 200 K at constant pressure. (Cv = 2000 J/(Kg*mole)*(Degree Celsius))
2*106
4*106
6*106
8*106
Explanation:
H2 – H1 = nCp(T2-T1).
Question 2
Marks : +2 | -2
Pass Ratio : 100%
An enthalpy change that does not involve a phase transition is
Latent Heat
Sensible Heat
Heat of solidification
Heat of sublimation
Explanation:
An enthalpy change that does not involve a phase transition is Sensible heat.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
The Enthalpy change of a solid directly to vapour is __________
Heat of Condensation
Heat of vaporization
Heat of solidification
Heat of sublimation
Explanation:
The Enthalpy change of a solid directly to vapour is the Heat of sublimation.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
The negative of the heat of fusion is
Heat of Condensation
Heat of vaporization
Heat of solidification
Heat of sublimation
Explanation:
The negative of the heat of fusion is Heat of solidification.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
The Enthalpy change for the phase transition of melting is ___________
Heat of Condensation
Heat of fusion
Heat of solidification
Heat of sublimation
Explanation:
The Enthalpy change for the phase transition of melting is the Heat of fusion.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
What is the Enthalpy change for a 10 Kg mole Oxygen gas that is heated from 200 K to 400 K at constant pressure. (Cv = 40000 J/(Kg*mole)*(Degree Celsius))
20*106
40*106
60*106
80*106
Explanation:
H2 – H1 = nCp(T2-T1).
Question 7
Marks : +2 | -2
Pass Ratio : 100%
An enthalpy change that involve a phase transition is
Heat of the reaction
Latent Heat
Heat of fusion
Heat of sublimation
Explanation:
An enthalpy change that involve a phase transition is Latent heat.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
The enthalpy change for the phase transition of a liquid to a vapour is
Heat of Condensation
Heat of vaporization
Heat of solidification
Heat of sublimation
Explanation:
The enthalpy change for the phase transition of a liquid to a vapour is called Heat of vaporization.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
An example of phase transition is
Liquid to gas phase
Gas to liquid phase
Solid to liquid phase
All of the mentioned
Explanation:
Phase change is occurring in each case.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
The negative of heat of vaporization is
Heat of Condensation
Heat of fusion
Heat of solidification
Heat of sublimation
Explanation:
The negative of heat of vaporization is Heat of Condensation.