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The linearized version of the Clapeyron Equation is Ln(P) -AH/RT K (a) The data below are experimental values of the vapor pressure of pure ethanol at various temperatures. From a plot of Ln(P) vs. 1/T, calculate AHvap for ethanol using the Method of Least Squares Experimental Values of the Vapor Pressure of Pure Ethanol at Various Temperatures Vapor Pressure, P (torr) 298.15 303.15 308.15 313.15 318.15 323.15 328.15 333.15 338.15 55.9 70.0 93.8 154.1 190.7 241.9 304.15 377.9 (b) What is the correlation coefficient (r) from your data and your linear fit?
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298.15 303.15 308.15 313.15117.5 98062.9225 13806.25 36795.125 318.15 154.1 1012194225 23746.81 49026.915 323.15190.7 104425.9225 36366.49 61624.705 328.15 241.9 107682.4225 58515.6179379.485 333.15304.15 110988.922592507.2225 101327.572:5 338.15 377.9 114345.4225 142808.41 127786.885 2863.35 1605.95 912474.8025 384574.0425 522732.2425 55.9 8889 16666.585 21220.5 28904.47 3.4225 3124.81 70 91899.9225 4900 93.8 94956.4225 8798.44 ΣΧ-863.35·ΣΧ2-9124 74.8025. Σν-1605 .95, Σ,2-384574.042 5. Zxy-522732.2425 as =2x2 =91 24 74.8025-(863.35)2 -1500 9 Sy-2y^ -384574.0425 -deog (1605.95)2 -98010.10889 (x)(Σ, 522 732.2425 2863.35 1605.95 =11799.25 9

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