Consider a liquid mixture of CHCl3 (component A) and CH₂Cl₂ (component B) with XB = 0.750. For each of the pure substances, one can find expressions relating their vapor pressure to temperature in the NIST Webbook: In In PA* 1 bar Рв 1 bar = 9.6886 = 10.4466 - 2839.38 (T - 40.953) 3055.57 (T - 20.474) (a) Assuming that the solution is ideal, determine its total vapor pressure (in bars) at 300 K and the mole fractions of the two components in the vapor phase. Assume that the vapor behaves as an ideal gas. (b) The actual total vapor pressure of the solution is observed to be 0.492 bar, and the mole fraction of component B in the vapor phase is yв = 0.900. Use this information, along with the results of part (a), to calculate the activity and the activity coefficient (based on a Raoult's Law standard state) of component A (chloroform) for this mixture.

Consider a liquid mixture of CHCl3 (component A) and CH₂Cl₂ (component B) with XB = 0.750. For each of the pure substances, one can find expressions relating their vapor pressure to temperature in the NIST Webbook: In In PA* 1 bar Рв 1 bar = 9.6886 = 10.4466 - 2839.38 (T - 40.953) 3055.57 (T - 20.474) (a) Assuming that the solution is ideal, determine its total vapor pressure (in bars) at 300 K and the mole fractions of the two components in the vapor phase. Assume that the vapor behaves as an ideal gas. (b) The actual total vapor pressure of the solution is observed to be 0.492 bar, and the mole fraction of component B in the vapor phase is yв = 0.900. Use this information, along with the results of part (a), to calculate the activity and the activity coefficient (based on a Raoult's Law standard state) of component A (chloroform) for this mixture.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Consider a liquid mixture of CHCl3 (component A) and CH₂Cl₂ (component B) with XB = 0.750.
For each of the pure substances, one can find expressions relating their vapor pressure to
temperature in the NIST Webbook:
2839.38
(T - 40.953)
3055.57
(T - 20.474)
(a) Assuming that the solution is ideal, determine its total vapor pressure (in bars) at 300 K
and the mole fractions of the two components in the vapor phase. Assume that the
vapor behaves as an ideal gas.
In
In
PA
1 bar
PB
1 bar
= 9.6886
-
= 10.4466-
(b) The actual total vapor pressure of the solution is observed to be 0.492 bar, and the mole
fraction of component B in the vapor phase is yB = 0.900. Use this information, along
with the results of part (a), to calculate the activity and the activity coefficient (based on
a Raoult's Law standard state) of component A (chloroform) for this mixture.

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