# Generate P-x 1 -y 1 diagrams at 100C for one of the systems identified below. Base activity

## Question:

Generate P-x_{1}-y_{1} diagrams at 100°C for one of the systems identified below. Base activity coefficients on the Wilson equation, Eqs. (13.45) to (13.47). Use two procedures: (i) modified Raoult’s law, Eq. (13.19), and (ii) the gamma/phi approach, Eq. (13.13), with Φ_{i} given by Eq. (13.14). Plot the results for both procedures on the same graph. Compare and discuss them.

Data sources: For P^{sat}_{i} use Table B.2. For vapor-phase nonidealities, use material from Chap. 3; assume that the vapor phase is an (approximately) ideal solution. Estimated parameters for the Wilson equation are given for each system.

(a) Benzene(1)/carbon tetrachloride(2): Λ_{12} = 1.0372, Λ_{21} = 0.8637

(b) Benzene(1)/cyclohexane(2): Λ_{12} = 1.0773, Λ_{21} = 0.7100

(c) Benzene(1)/n-heptane(2): Λ_{12} = 1.2908, Λ_{21} = 0.5011

(d) Benzene(1)/n-hexane(2): Λ_{12} = 1.3684, Λ_{21} = 0.4530

(e) Carbon tetrachloride(1)/cyclohexane(2): Λ_{12} = 1.1619, Λ_{21} = 0.7757

(f) Carbon tetrachloride(1)/n-heptane(2): Λ_{12} = 1.5410, Λ_{21} = 0.5197

(g) Carbon tetrachloride(1)/n-hexane(2): Λ_{12} = 1.2839, Λ_{21} = 0.6011

(h) Cyclohexane(1)/n-heptane(2): Λ_{12} = 1.2996, Λ_{21} = 0.7046

(i) Cyclohexane(1)/n-hexane(2): Λ_{12} = 1.4187, Λ_{21} = 0.5901

**Eq (13.45)**

**Eq (13.47)**

**(i) Eq (13.19)**

**(ii) Eq (13.13)**

**(ii) Eq (13.14)**

**Table B.2**

## Step by Step Answer:

**Related Book For**

## Introduction To Chemical Engineering Thermodynamics

**ISBN:** 9781259696527

8th Edition

**Authors:** J.M. Smith, Hendrick Van Ness, Michael Abbott, Mark Swihart