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The enthalpy of vaporization of a certain liquid is found to be 14.4 kJ mol-¹ at 180 K, its normal boiling point (i.e. where boiling occurs at 1 atm). The molar volumes of the liquid and the vapor at the boiling point are 115 cm³ mol-1¹ and 15.4 dm³ mol-¹, respectively. (a) Estimate dp/dT from the Clapeyron equation and (b) the percentage error in its value if the Clausius-Clapeyron equation is used instead.

The enthalpy of vaporization of a certain liquid is found to be 14.4 kJ mol-¹ at 180 K, its normal boiling point (i.e. where boiling occurs at 1 atm). The molar volumes of the liquid and the vapor at the boiling point are 115 cm³ mol-1¹ and 15.4 dm³ mol-¹, respectively. (a) Estimate dp/dT from the Clapeyron equation and (b) the percentage error in its value if the Clausius-Clapeyron equation is used instead.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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The enthalpy of vaporization of a certain liquid is found to be 14.4 kJ mol-¹ at 180 K, its normal boiling point (i.e. where boiling occurs at 1 atm). The molar volumes of the liquid and the vapor at the boiling point are 115 cm³ mol-¹ and 15.4 dm³ mol-¹, respectively. (a) Estimate dp/dT from the Clapeyron equation and (b) the percentage error in its value if the Clausius-Clapeyron equation is used instead.
Transcribed Image Text:The enthalpy of vaporization of a certain liquid is found to be 14.4 kJ mol-¹ at 180 K, its normal boiling point (i.e. where boiling occurs at 1 atm). The molar volumes of the liquid and the vapor at the boiling point are 115 cm³ mol-¹ and 15.4 dm³ mol-¹, respectively. (a) Estimate dp/dT from the Clapeyron equation and (b) the percentage error in its value if the Clausius-Clapeyron equation is used instead.
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