You are given vapor pressure data in the form of [T (C). p (mm Hg)] pairs. Construct
Question:
You are given vapor pressure data in the form of [T (°C). p (mm Hg)] pairs. Construct a spreadsheet or write a computer program to perform the following tasks:
(a) Read in Tt, p1, T2, p2,..., TN, pN.
(b) Fit the Clausius—Clapeyron equation to the data using the method of least squares (Appendix A.1) or a fitting routine embedded in the spreadsheet. In completing this task you should find the values of a and b in the formula y = ax + b, where y = In p* and x = 1/(T + 273.2). Print out the values of a and b.
Test your program by fitting the data for ethylene glycol given in Problem 6.4. Then use your formula to estimate the vapor pressures of this substance at 50°C, 80°C, and 110°C, and the boiling points at 760 mm Hg and 2000 mm Hg. In which of the last two values would you have the least confidence? Explain your reasoning.
Step by Step Answer:
Elementary Principles of Chemical Processes
ISBN: 978-0471720638
3rd Edition
Authors: Richard M. Felder, Ronald W. Rousseau