At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is

Chemical Engineering Thermodynamics
At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is

3.389

4.238

1.572

1.9398

3.389

4.238

1.572

1.9398

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Chemical Engineering Thermodynamics
Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

Same COP

Increased COP

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

Same COP

Increased COP

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Chemical Engineering Thermodynamics
For a constant pressure reversible process, the enthalpy change (ΔH) of the system is

∫Cp.dT

∫Cv.dT

Cv.dT

Cp.dT

∫Cp.dT

∫Cv.dT

Cv.dT

Cp.dT

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Chemical Engineering Thermodynamics
A domestic refrigerator has a/an __________ cooled condenser.

Water

Gas

Evaporative

Air

Water

Gas

Evaporative

Air

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Chemical Engineering Thermodynamics
Law of corresponding states says that

, two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same

The molar heat of energy of gas at constant volume should be nearly constant (about 3 calories)

No gas can be liquified above the critical temperature, howsoever high the pressure may be

The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature

, two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same

The molar heat of energy of gas at constant volume should be nearly constant (about 3 calories)

No gas can be liquified above the critical temperature, howsoever high the pressure may be

The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature

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Chemical Engineering Thermodynamics
Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

First fall and then rise

Remain unchanged

Decrease

Increase

First fall and then rise

Remain unchanged

Decrease

Increase

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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Chemical Engineering Thermodynamics For a constant pressure reversible process, the enthalpy change (ΔH) of the system is

Chemical Engineering Thermodynamics A domestic refrigerator has a/an __________ cooled condenser.

Chemical Engineering Thermodynamics Law of corresponding states says that

Chemical Engineering Thermodynamics Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

Chemical Engineering Thermodynamics
Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Chemical Engineering Thermodynamics
For a constant pressure reversible process, the enthalpy change (ΔH) of the system is

Chemical Engineering Thermodynamics
A domestic refrigerator has a/an __________ cooled condenser.

Chemical Engineering Thermodynamics
Law of corresponding states says that

Chemical Engineering Thermodynamics
Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will