For a multicomponent system, the term chemical potential is equivalent to the
First law of thermodynamics is mathematically stated as
Pick out the wrong statement.
One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one
__________ functions are exemplified by heat and work.
An ideal liquid refrigerant should
The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law )
Pick out the wrong statement.
The total change in the enthalpy of a system is independent of the
The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.
The following heat engine produces power ofkW. The heat engine operates betweenK andK. It has a thermal efficiency equal toof that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is
Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a __________ vapour.
Fugacity is a measure of the
The quantitative effect of temperature on chemical equilibrium is given by the
What is the value of Joule-Thomson co-efficient for an ideal gas ?
A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P1 and P2.(where, P1 and P2 are initial and final pressures respectively)
Pick out the extensive property out of the following.
An irreversible process
The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process.
Joule-Thomson co-efficient for a perfect gas is
Pick out the wrong statement:
Which of the following is not affected by temperature changes ?
A change in state involving a decrease in entropy can be spontaneous, only if
The change in Gibbs freee energy for vaporisation of a pure substance is
In case of a close thermodynamic system, there is __________ across the boundaries.
If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as
If we increase the pressure on a substance (which is at its triple point), then the triple point
Number of phases in a colloidal system are
For a constant volume process
Refrigeration cycle
At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by(where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)
y = specific heat ratio of an ideal gas is equal to
Joule-Thomson co-efficient depends on the
With increase in compression ratio, the efficiency of the otto engine
For an ideal gas, the activity co-efficient is
In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in
During a reversible isothermal expansion of an ideal gas, the entropy change is
In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v1 = 1 m3 and v2 3 m3 ) is max imum, when the value of 'n' is
Free energy changes for two reaction mechanism 'X' and 'Y are respectively -and - 5 units. It implies that X is
The enthalpy change when ammonia gas is dissolved in water is called the heat of
The kinetic energy of gas molecule is zero at
Which law of the thermodynamics provids basis for measuring the thermodynamic property ?
The chemical potential of any constituent of an ideal solution depends on the __________ of the solution.
Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called __________ solutions.
Which law of the thermodynamics provids basis for measuring the thermodynamic property ?
__________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low.
For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) atkPa will be
__________ functions are exemplified by heat and work.
Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called __________ solutions.
In any spontaneous process, the __________ free energy decreases.