If the one-constant Margules equation is valid for a binary mixture, what value of GE is required for phase separation to occur?

Q: a. Explain in words what is excess Gibbs free energy of mixing? b. Define what is excess entalphy…

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Q: 1) In terms of fugacities, comment on the distinction between the fugacity coefficient and and the…

A: Both the fugacity coefficient (φi) and activity coefficient (γi) are dimensionless quantities used…

Q: For the normal hexane–methanol–methyl acetate system at 1 atm, find, all binary and ternary…

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Q: 100 mol of oxygen is mixed with 300 mol of nitrogen at SATP (T = 298.15 K, P = 105 Pa). Calculate…

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Q: - Using the phase diagram for phosphorous below, which of the following statements is correct?…

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Q: Problem 1 (50 %). At 60ºC, components 1 and 2 form an azeotrope at a pressure of 0.64 bar and x1 =…

A: (a) The value of Margules parameter A is to be determined.   The modified Raoult's law is given as,…

Q: This problem is (13.11) from a book  "Thermodynamics and Statistical Mechanics An Integrated…

A: Let,     N1 be number of polymer molecules and     N2 be the number of solvent molecules.    M be…

Q: W = RT₁1₁ (P2 8-1|\P- 8-1 8 -

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Q: 11.8. Find all stability criteria that are first violated for a ternary system of components 1, 2,…

A: The general stability criteria for the second derivative of thermodynamic potentials a shown below:

Q: What are the six most widely used methods for estimating liquid-phase activity coefficients?

A: To estimate the liquid-phase activity coefficients, there are many models. The 6 most widely used…

Q: Why is fugacity used in place of chemical potential to determine phase equilibria? Who invented…

A: At a particular temperature and pressure the two phases are said to be in equilibrium if chemical…

Q: & The number of degrees of freedom for an azeotropic mixture in a two component vapeur-liquid (d) 34…

A: Given Number of component N = 2Number of phase P = 2Number of reaction R = 0s =1

Q: Explain how the solid-liquid line in the phase diagram of water differs in character from the…

A: In general for any matter the solid has much more density than liquid state. But, the property of…

Q: Blank 1 is used when the boiling point of the compound (or the solvent) is too high (BP >150 °C) in…

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Q: Using the data attached, compute the partial molar enthalpies of pyridine and acetic acid in their…

A: Let pyridine be represented by (1) and acetic acid by (2). Given values of heat of mixing of…

Q: 1. Please write down the MESH equation for the Nth adiabatic equilibrium stage in a distillation…

A: As we know that distillation column is dived into two sections which are:  Rectifying Section…

Q: The isotherm representing the critical temperature is tangent to and has an inflection point at the…

A: Given that the isotherm is tangent to the critical point an it also has an inflection point there.…

Q: In a rigorous vapor–liquid–liquid equilibrium calculation (the so-called three-phase flash), is it…

A: The three-phase flash calculations are analogous to the two-phase flash calculations. Conditions…

Q: Why is the fugacity a better way to consider phase equilibria compared to the molar Gibbs energy?

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Q: Illustrate graphically the positive and negative deviation from ideal behavior of binary mixtures…

A: Introduction The most important variables describing a binary mixture are pressure, temperature and…

Q: Determine whether the van der Waals equation of state admits a critical point if we do not include…

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Q: What advantages do the Maxwell–Stefan relations provide for multicomponent mixtures containing…

A: The advantages of the Maxwell-Stefan relation over the Fick's law are to be mentioned.

Q: When ∆G for an isolated system is equal to zero, the system is said to be O ideal O adiabatic O…

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Q: Calculate the change in entropy (Δ??) for the following random mixing process at room temperature to…

A: Mole fraction of nitrogen in the air mixture, x1=0.78 Mole fraction of oxygen in the air mixture,…

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Q: 10. Enumerate the variables & equilibrium conditions and the resulting degrees of freedom in a…

A: (i ) number species N = 3    Number of phase C = 2  Degree of freedom = 2+N-C…

Q: 1. Derive the relation; As = nc,ln- nRln %3D Hint: Use enthalpy relation 2. Find the change in…

A: 1.   The first law of thermodynamics for an ideal gas is written as: dU=dQ−dW           ...... (1)…

Q: At 1000 kpa and 500k, is toluene present in 2 vapor-liquid phases? use the antoine equation to…

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Q: Below is an electron energy level diagram for the hydrogen atom assuming the Bohr model. Use this…

A: Write the Bohr model for hydrogen as follows: ∆E = -RH1nf2-1ni2      ......1   Here, ∆E is the…

Q: The following data shows the liquid-vapor phase boundary of methane. T/K 100 108 110 112 114 120…

A: From the given data- T/K 100 108 110 112 114 120 130 140 150 160 170 190 P/MPa 0.034 0.074…

Q: Calculate the Gibbs energy, entropy, and enthalpy of mixing when 0.50mol C6H14 (hexane) is mixed…

A: Given that, The number of moles of C6H14 n1 = 0.5 mol The number of moles of C7H16 n2 = 2 mol…

Q: Given the 1-parameter Margules equation, plot themolar Gibbs free energy of mixing as a function…

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Q: 6. The standard enthalpy of formation of gaseous butane, C4H10, is -126.15 kJ mol-1 at 298K. Write…

A: Given C4H10 -Butane Standard enthalpy of butane=-126.15 kJmol

Q: In terms of fugacities, comment on the distinction between the fugacity coefficient and and the…

A: A species "i" in a mixture, then what is the difference between  Fugacity coefficient(φi ) vs the…

Q: Consider a solution of completely miscible liquids A and B. Show that the slopes of the plots of the…

A: Given : Consider a solution of completely miscible liquids A and BTo Show : Slopes of the plots of…

Q: QUESTION 1 (NON-CEP) A bench top unit designed for students to investigate the relationship between…

A: Part (a) (i) and (ii): Using the given P-X-Y data, the graph between P-X and P-Y is plotted as shown…

Q: Under the Born-Oppenheimer approximations, write out the electronic Hamiltonian for the BeH3+

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Q: What is the maximum number of phases that can be in mutual equilibrium in a two- component system?

A: According to the Gibbs phase rule F= C-P+2 ------------------(1) where , F stands for the degrees of…

Q: (b) Why does the liquid-gas coexistence curve in a P-T phase diagram end at the critical point? Draw…

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Q: A mixture of 3 components in 2 phases are present. You are given the temperature and pressure. How…

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Q: Fundamental equation of enthalpy for open systems: dH = Tds + VdP + GdN Mawell relations for open…

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Q: Prove that if one component of a binary solution follows Raoult’s law over the entire composition…

A: Binary solution is given. One component follows the Raoult's law.

Q: 1. Consider cyclobutadiene molecule (structure is shown below) has a point group Dah. Using LCAO-MO…

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