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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as

P = F - C - 2
C = P - F + 2
F = C - P - 2
P + F - C = 2

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Chemical Engineering Thermodynamics
In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is

Unpredictable; depends on the particular reaction
Less
More
Same

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Chemical Engineering Thermodynamics
The absolute entropy for all crystalline substances at absolute zero temperature is

Zero
More than zero
Negative
Indeterminate

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Chemical Engineering Thermodynamics
A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is

None of these
Zero
Positive
Negative

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Chemical Engineering Thermodynamics
At the critical point of a substance

There is no distinction between liquid and vapour phases
The surface tension vanishes
Liquid and vapour have the same density
All of these

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Chemical Engineering Thermodynamics
Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the

Neither A nor B
Either A or B
Hot reservoir approaches infinity
Cold reservoir approaches zero

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