Question

Problem 5- We have a binary system of 70 mol% toluene (1) and 30 mol% p-xylene (2) that behaves like an ideal liquid solution; therefore, we can apply Raoult's Law: $y_i P = x_i P_i^{sat}$ What are the vapor phase compositions for a temperature of 75 °C and pressure of 30 KPa? Solve the problem two ways: a) Use the Antoine equation. b) Use the shortcut vapor pressure equation.

          Problem 5- We have a binary system of 70 mol% toluene (1) and 30 mol% p-xylene (2)
that behaves like an ideal liquid solution; therefore, we can apply Raoult's Law:
$y_i P = x_i P_i^{sat}$
What are the vapor phase compositions for a temperature of 75 °C and pressure of 30
KPa? Solve the problem two ways:
a) Use the Antoine equation.
b) Use the shortcut vapor pressure equation.

Problem 5- We have a binary system of 70 mol% toluene (1) and 30 mol% p-xylene (2)
that behaves like an ideal liquid solution; therefore, we can apply Raoult's Law:
yi P = xi Pi^sat
What are the vapor phase compositions for a temperature of 75 °C and pressure of 30
KPa? Solve the problem two ways:
a) Use the Antoine equation.
b) Use the shortcut vapor pressure equation.

Added by Kevin C.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Riaz Ahmad

Step 1

The Antoine equation is a mathematical expression that relates the vapor pressure of a substance to its temperature. The equation for toluene is: log(P) = A - (B / (T + C)) where P is the vapor pressure in mmHg, T is the temperature in degrees Celsius, and A, B, Show more…

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Text: y1 and y2 must be solved separately. They do not equal 1. Problem 5: We have a binary system of 70 mol% toluene (1) and 30 mol% p-xylene (2) that behaves like an ideal liquid solution; therefore, we can apply Raoult's Law. y,P = x,Psat What are the vapor phase compositions for a temperature of 75Â°C and pressure of 30 kPa? Solve the problem two ways: a) Use the Antoine equation. b) Use the shortcut vapor pressure equation.