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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
Henry's law is closely obeyed by a gas, when its __________ is extremely high.

Temperature
Solubility
Pressure
None of the listed here

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Chemical Engineering Thermodynamics
The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is

-RT ln 0.5
2 RT
-2 RT ln 0.5
0.5 RT

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Chemical Engineering Thermodynamics
The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is

(∂S/∂V)T = (∂P/∂T)V
(∂T/∂V)S = -(∂P/∂S)V
(∂V/∂S)P = (∂T/∂P)S
(∂S/∂P)T = -(∂V/∂T)P

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Chemical Engineering Thermodynamics
A gas can be liquified by pressure alone only, when its temperature is __________ its critical temperature.

Less than or equal to
Less than
Equal to or higher than
More than

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Chemical Engineering Thermodynamics
PVy = constant, holds good for an isentropic process, which is

Adiabatic and irreversible
Reversible and isothermal
Isothermal and irreversible
Reversible and adiabatic

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Chemical Engineering Thermodynamics
For an ideal solution, the value of activity co-efficient is

> 1
1
< 1

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