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Two moles of a saturated liquid are converted to a saturated vapor by being heated in a piston/cylinder device arranged to maintain a pressure at 200 kPa. During the phase conversion, the volume of the system increases by 1000 cm³. The amount of heat required is 5 kJ and the temperature of the substance stays constant at 80°C during this process. (a) Determine the slope of the function of saturation pressure wrt saturation temperature for these conditions. [Hint: Start with 1st Law for closed systems] (b) If the reduced temperature for these conditions is Tr1 = 0.5, estimate the reduced temperature of the substance if the ratio of the latent heats of vaporization is AH /AH = 1.5. %3D

Two moles of a saturated liquid are converted to a saturated vapor by being heated in a piston/cylinder device arranged to maintain a pressure at 200 kPa. During the phase conversion, the volume of the system increases by 1000 cm³. The amount of heat required is 5 kJ and the temperature of the substance stays constant at 80°C during this process. (a) Determine the slope of the function of saturation pressure wrt saturation temperature for these conditions. [Hint: Start with 1st Law for closed systems] (b) If the reduced temperature for these conditions is Tr1 = 0.5, estimate the reduced temperature of the substance if the ratio of the latent heats of vaporization is AH /AH = 1.5. %3D

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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Two moles of a saturated liquid are converted to a saturated vapor by being heated in a piston/cylinder device arranged to maintain a pressure at 200 kPa. During the phase conversion, the volume of the system increases by 1000 cm3. The amount of heat required is 5 kJ and the temperature of the substance stays constant at 80°C during this process. (a) Determine the slope of the function of saturation pressure wrt saturation temperature for these conditions. [Hint: Start with 1st Law for closed systems] (b) If the reduced temperature for these conditions is T = 0.5, estimate the reduced temperature of the substance if the ratio of the latent heats of vaporization is AH? /AH = 1.5.
Transcribed Image Text:Two moles of a saturated liquid are converted to a saturated vapor by being heated in a piston/cylinder device arranged to maintain a pressure at 200 kPa. During the phase conversion, the volume of the system increases by 1000 cm3. The amount of heat required is 5 kJ and the temperature of the substance stays constant at 80°C during this process. (a) Determine the slope of the function of saturation pressure wrt saturation temperature for these conditions. [Hint: Start with 1st Law for closed systems] (b) If the reduced temperature for these conditions is T = 0.5, estimate the reduced temperature of the substance if the ratio of the latent heats of vaporization is AH? /AH = 1.5.
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