Use a graphical approach (either by hand, with graph paper, or electronically-prepared, perhaps with Excel) and the Clausius-Clapeyron equation with the vapor pressure data below to determine the molar enthalpy of vaporization for this substance in kilojoules/mole. Your graph and work must be shown for full credit. The data you graph will be derived (as discussed in class) from the values below. I have provided a blank worksheet to lead you to the correct information to graph. Also, predict the normal boiling point (in oC) for this substance and show your work. Temperature (oC) Pvap (torr) Temp (K) 1/T (K-1) Ln Pvap -74.3 1.00 -48.1 10.0 -27.7 40.0 -11.5 100. 17.9 400. Final answers: (graph must be attached, with axes labeled and all five data points shown) (slope of the line on your Clausius-Clapeyron graph) calculated Hvap in kJ/mole, based on your graph predicted normal boiling point, in oC, based on your graph

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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Use a graphical approach (either by hand, with graph paper, or electronically-prepared, perhaps with Excel) and the Clausius-Clapeyron equation with the vapor pressure data below to determine the molar enthalpy of vaporization for this substance in kilojoules/mole. Your graph and work must be shown for full credit. The data you graph will be derived (as discussed in class) from the values below. I have provided a blank worksheet to lead you to the correct information to graph. Also, predict the normal boiling point (in ^oC) for this substance and show your work.

Temperature (^oC)	P_vap (torr)	Temp (K)	1/T (K^-1)	Ln P_vap
-74.3	1.00
-48.1	10.0
-27.7	40.0
-11.5	100.
17.9	400.

Final answers:

______________ (graph must be attached, with axes labeled and all five data points shown)

______________ (slope of the line on your Clausius-Clapeyron graph)

______________ calculated H_vap in kJ/mole, based on your graph

______________ predicted normal boiling point, in ^oC, based on your graph

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