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QUESTION: 1

Isothermal bulk modulus of a substance is denoted by

Solution:

QUESTION: 2

Average coefficient of volume expansion of a substance is denoted by

Solution:

QUESTION: 3

A gas having a negative Joule-Thomson coefficient ( μ_{j} < 0), when throttled, will

Solution:

QUESTION: 4

The Clausius-Clapeyron equation gives the slope of curve on

Solution:

QUESTION: 5

The variation of saturation pressure with saturation temperature for a liquid is 0.1 bar/K at 400 K. The specific volume of saturated liquid and dry saturated vapour at 400 K are 0.251 and 0.001 m^{3}/kg. What will be value of latent heat of vaporization using Clausius clapeyron equation?

Solution:

QUESTION: 6

Consider the following statements pertaining to the Clapeyron equation:

1. It is useful in estimating properties like enthalpy from other measurable properties.

2. At a change of phase, it can be used to find the latent heat at a given pressure.

3. It is derived from the relationship

Which of the statements given above are correct?

Solution:

QUESTION: 7

What is the unit of Gibbs free energy?

Solution:

Gibbs free energy is defined as the thermodynamic potential that is used to calculate the maximum amount of reversible work. It takes place at a constant pressure and temperature. The SI unit is Joule.

QUESTION: 8

At chemical equilibrium, Gibbs function is

Solution:

(dG)_{T,P} = 0 (equilibrium condition)

QUESTION: 9

Which of the following parameter is.the criterion of equilibrium and stability of a system existing at constant volume and constant temperature?

Solution:

QUESTION: 10

The internal energy of an ideal gas is a function of

Solution:

For an ideal Gas

U = f(T) only

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