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 Van Laar equation Clayperon-Claussius equation Maxwell's equation Nernst Heat Theorem TRUE ANSWER : ? YOUR ANSWER : ?
A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of Temperature, pressure, liquid composition xi and vapour composition yi Temperature and pressure only Temperature only Temperature, pressure and liquid composition xi only TRUE ANSWER : ? YOUR ANSWER : ?
Partial molar free energy of an element A in solution is same as its Chemical potential Fugacity Activity Activity co-efficient TRUE ANSWER : ? YOUR ANSWER : ?
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of Vaporisation Fusion None of these Transition TRUE ANSWER : ? YOUR ANSWER : ?
The compressibility factor of a gas is given by (where, V₁ = actual volume of the gas V₂ = gas volume predicted by ideal gas law ) V₂/V₁ V₁.V₂ V₁-V₂ V₁/V₂ TRUE ANSWER : ? YOUR ANSWER : ?
Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure. Fugacity Activity co-efficient A, B, and C Partial pressure TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass? DQ = CpdT + Vdp Tds = dE - PdV DQ = CvdT + PdV DE = Tds - PdV TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is true for Virial equation of state? Virial co-efficients are universal constants For some gases, Virial equations and ideal gas equations are the same Virial co-efficients Virial co-efficients are function of temperature only TRUE ANSWER : ? YOUR ANSWER : ?
The adiabatic throttling process of a perfect gas is one of constant enthalpy In which there is an increase in temperature Which is exemplified by a non-steady flow expansion In which there is a temperature drop Which can be performed in a pipe with a constriction TRUE ANSWER : ? YOUR ANSWER : ?
The standard Gibbs free energy change of a reaction depends on the equilibrium Pressure Composition All of these Temperature TRUE ANSWER : ? YOUR ANSWER : ?