Third law of thermodynamics is helpful in
Prediction of the extent of a chemical reaction
Calculating absolute entropies of substances at different temperature
Evaluating entropy changes of chemical reaction
Both (B) and (C)
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- Which of the following will increase the volume of a real gas by four times?
- A gas can be liquefied by pressure alone only, when its temperature is __________ its critical temperature.
- Pick out the wrong statement
- The free energy change for a chemical reaction is given by (where, K = equilibrium constant)
- The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for
- Joule-Thomson effect i.e., a throttling process is a constant __________ process.
- Variation of equilibrium pressure with temperature for any two phases of a given substances is given…
- Which of the following identities can be most easily used to verify steam table data for superheated…
- Work done is a
- Reduced pressure of a gas is the ratio of its
- When a gas in a vessel expands, its internal energy decreases. The process involved is
- What is the value of ln y (where y = activity co-efficient) for ideal gases?
- The unit of equilibrium constant of a chemical reaction is the same as that of
- If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________…
- The internal energy of an ideal gas is a function of its __________ only.
- The necessary condition for phase equilibrium in a multiphase system of N components is that the
- With increase in pressure (above atmospheric pressure), the Cp of a gas
- Partial molar free energy of an element A in solution is same as its
- Degree of freedom of a system consisting of a gaseous mixture of H2 and NH3 will be
- Internal energy change of a system over one complete cycle in a cyclic process is
- Number of degrees of freedom for a three phase system in equilibrium comprising of three nonreacting…
- 1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated…
- Trouton's ratio of __________ liquids is calculated using Kistyakowsky equation.
- Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance…
- Which of the following decreases with increase in pressure?
- In the reaction, represented by, 2SO2 + O2 2SO3; ΔH = - 42 kcal; the forward reaction will be favoured…
- In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible __________ process.
- The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.
- As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T)…
- Entropy is a measure of the __________ of a system.