Answered: Phase Molar heat capacity, Cm(Jmol⋅K)…

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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Question

Phase	Molar heat capacity, Cm(Jmol⋅K)	ΔHfuso(kJmol)	ΔHvapo(kJmol)	Melting point (^oC)	Boiling point (^oC)
solid	37.6	6.02	n/a	0.0	n/a
liquid	75.4	-6.02	40.7	0.0	100.0
gas	33.1	n/a	-40.7	n/a	100.0

Hints: 1) remember that for any phase change, the energy associated with that phase change is the same magnitude, just opposite sign depending on which direction you're going. 2) A change in temperature has the same magnitude whether you're using degrees Celsius or Kelvins. 3) Make sure you're using consistent energy units!

1) Suppose that a 5.0-kg block of ice at 0.0 ^oC is heated with 1700 kJ of energy. Will all of the ice melt? If so, what is the final temperature of the liquid? If not, what percentage of the ice is melted?

a) Sketch the heating curve for the ice.

b) Calculate how much energy is required to completely melt the ice.

c) Based on your answer to part (b), determine either the final temperature of the liquid or what percentage of the ice melted

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