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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope?

2
3
1

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Chemical Engineering Thermodynamics
At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.

92
72
192
142

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Chemical Engineering Thermodynamics
An isolated system can exchange __________ with its surroundings.

Both matter and energy
Neither matter nor energy
Matter
Energy

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Chemical Engineering Thermodynamics
The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nCv ln (T₂/T₁) is valid for

Cooling of a substance
Simultaneous heating and expansion of an ideal gas
Reversible isothermal volume change
Heating of a substance

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Chemical Engineering Thermodynamics
If heat contents of CH₄, C₂H₄ and C₃H₈ are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH₄(g) + C₂H₄(g) ⇋ C₃H₈(g) will be __________ Kcal.

-55.2
55.2
-19.4
-30.2

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Chemical Engineering Thermodynamics
Clayperon equation deals with the

Calculation of ΔF for spontaneous phase change
Effect of an inert gas on vapour pressure
Rate of change of vapour pressure with temperature
Temperature dependence of heat of phase transition

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