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

4.238

3.389

1.9398

1.572

4.238

3.389

1.9398

1.572

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

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

Enhanced COP

No change in the value of COP

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

Enhanced COP

No change in the value of COP

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Chemical Engineering Thermodynamics
The internal energy of an ideal gas does not change in a reversible __________ process.

Isometric

Isothermal

Adiabatic

Isobaric

Isometric

Isothermal

Adiabatic

Isobaric

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Chemical Engineering Thermodynamics
Second law of thermodynamics is concerned with the

Amount of energy transferred

Non-cyclic processes only

Irreversible processes only

Direction of energy transfer

Amount of energy transferred

Non-cyclic processes only

Irreversible processes only

Direction of energy transfer

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Chemical Engineering Thermodynamics
Number of phases in a colloidal system are

2

1

3

4

2

1

3

4

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Chemical Engineering Thermodynamics
It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions.

The amount of work needed is path dependent

The amount of work needed is independent of path

More information is needed to conclude anything about the path dependence or otherwise of the work needed

Work alone can not bring out such a change of state

The amount of work needed is path dependent

The amount of work needed is independent of path

More information is needed to conclude anything about the path dependence or otherwise of the work needed

Work alone can not bring out such a change of state

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Chemical Engineering Thermodynamics

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

Chemical Engineering Thermodynamics The internal energy of an ideal gas does not change in a reversible __________ process.

Chemical Engineering Thermodynamics Second law of thermodynamics is concerned with the

Chemical Engineering Thermodynamics Number of phases in a colloidal system are

Chemical Engineering Thermodynamics It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions.

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

Chemical Engineering Thermodynamics
The internal energy of an ideal gas does not change in a reversible __________ process.

Chemical Engineering Thermodynamics
Second law of thermodynamics is concerned with the

Chemical Engineering Thermodynamics
Number of phases in a colloidal system are

Chemical Engineering Thermodynamics
It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions.