The relation connecting the fugacities of various components in a solution with one another and to composition at constant temperature and pressure is called the _____________ equation?
(A) Gibbs-Duhem
(B) Van Laar
(C) Gibbs-Helmholtz
(D) Margules
The necessary and sufficient condition for equilibrium between two phases is_________________?
(A) The concentration of each component should be same in the two phases
(B) The temperature of each phase should be same
(C) The pressure should be same in the two phases
(D) The chemical potential of each component should be same in the two phases
For an ideal liquid solution, which of the following is unity ?
(A) Activity
(B) Fugacity
(C) Activity co-efficient
(D) Fugacity co-efficient
Internal energy is equal to the heat absorbed in case of a/an ______________ process?
(A) Constant volume
(B) Polytropic
(C) Adiabatic
(D) Constant pressure
The expression for entropy change, ΔS = n Cp . ln (T2/T1), is valid for the ______________ of a substance?
(A) Simultaneous pressure & temperature change
(B) Heating
(C) Cooling
(D) Both
Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is__________________?
(A) 1
(B) 2
(C) 3
(D) 4
For a real gas, the chemical potential is given by_____________________?
(A) RT d ln P
(B) RT d ln f
(C) R d ln f
(D) None of these
The free energy change for a chemical reaction is given by (where, K = equilibrium constant)________________?
(A) RT ln K
(B) -RT ln K
(C) -R ln K
(D) T ln K
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 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be__________________?
(A) 6738.9
(B) 6753.5
(C) 7058.3
(D) 9000
If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the _________________?
(A) Maxwell’s equation
(B) Clausius-Clapeyron Equation
(C) Van Laar equation
(D) Nernst Heat Theorem