You must enter the answer with one number pass the decimal. You perform a distillation of a certain liquid at two different pressures The first distillation was done on a day when the pressure was 760 mmHg. The boiling point (the range where we saw drips come over) is 341. This is in Kelvin. (This is the normal boiling point) Then you connected the adapter to a vacuum. The manometer shows the pressure is now 413 mmHg. The liquid now boils at 320 Kelvin. What is the enthalpy of vaporization in kJ/mol?

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...
icon
Related questions
Question
You must enter the answer with one number
pass the decimal.
You perform a distillation of a certain liquid at
two different pressures
The first distillation was done on a day when
the pressure was 760 mmHg.
The boiling point (the range where we saw
drips come over) is 341. This is in Kelvin.
(This is the normal boiling point)
Then you connected the adapter to a vacuum.
The manometer shows the pressure is now 413
mmHg. The liquid now boils at 320 Kelvin.
What is the enthalpy of vaporization in kJ/mol?
Hint: Clausius Clapeyron equation
In(P2/P1) =DHvap/R* (T2-T1)/(T2T1) or
In(P2/P1) =DHvap/R* (1/T1 - 1/T2)
R = 8.3145 J/mol K
Transcribed Image Text:You must enter the answer with one number pass the decimal. You perform a distillation of a certain liquid at two different pressures The first distillation was done on a day when the pressure was 760 mmHg. The boiling point (the range where we saw drips come over) is 341. This is in Kelvin. (This is the normal boiling point) Then you connected the adapter to a vacuum. The manometer shows the pressure is now 413 mmHg. The liquid now boils at 320 Kelvin. What is the enthalpy of vaporization in kJ/mol? Hint: Clausius Clapeyron equation In(P2/P1) =DHvap/R* (T2-T1)/(T2T1) or In(P2/P1) =DHvap/R* (1/T1 - 1/T2) R = 8.3145 J/mol K
Expert Solution
steps

Step by step

Solved in 4 steps with 2 images

Blurred answer
Knowledge Booster
Properties of Liquids
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY