Chemical Engineering - Chemical Engineering Thermodynamics

21.
Which of the following is affected by the temperature ?
Fugacity
Activity co-efficient
Free energy
All (a), (b) & (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
Work done may be calculated by the expression for __________ processes.
non-flow reversible
adiabatic
both (a) and (b)
neither (a) nor (b)
Answer: Option
Explanation:
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23.
The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1 is the activity co-efficient of component 1, is
A . x22
Ax1
Ax2
Ax12
Answer: Option
Explanation:
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24.
The adiabatic throttling process of a perfect gas is one of constant enthalpy
in which there is a temperature drop.
which is exemplified by a non-steady flow expansion.
which can be performed in a pipe with a constriction.
in which there is an increase in temperature.
Answer: Option
Explanation:
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25.
For spontaneous changes in an isolated system (S = entropy)
ds = 0
ds <0
ds > 0
ds = Constant
Answer: Option
Explanation:
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