__________ does not change during phase transformation processes like sublimation, melting & vaporisation.
Entropy
Gibbs free energy
Internal energy
All (A), (B) & (C)
- A solid is transformed into vapour without going to the liquid phase at
- For an ideal gas, the activity co-efficient is
- Which of the following is not an equation of state?
- At triple point (for one component system), vapour pressure of solid as compared to that of liquid will…
- Which of the following is not an intensive property?
- In an ideal gas mixture, fugacity of a species is equal to its
- Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.
- The ratio of equilibrium constants (Kp2/Kp1) at two different temperatures is given by
- The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300…
- Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P,…
- The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for
- Specific/molar Gibbs free energy for a pure substance does not change during
- The necessary and sufficient condition for equilibrium between two phases is
- Degrees of freedom at triple point will be
- What is the ratio of adiabatic compressibility to isothermal compressibility?
- Entropy change for an irreversible process taking system and surrounding together is
- 1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated…
- Law of corresponding states says that
- Variation of equilibrium pressure with temperature for any two phases of a given substances is given…
- The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature…
- If the internal energy of an ideal gas decreases by the same amount as the work done by the system,…
- An ideal liquid refrigerant should
- The enthalpy change when ammonia gas is dissolved in water is called the heat of
- COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about
- An isentropic process is carried out at constant
- Ideal gas law is applicable at
- Pick out the wrong statement.
- Which of the following is not an extensive property?
- Reduced pressure of a gas is the ratio of its
- Third law of thermodynamics is concerned with the