Using Fig. 6.10: (a) Determine whether ice that forms at P =700 MPa floats or sinks in the liquid water with which it is at equilibrium. (b) Calculate the difference in specific enthalpy between Ice Ih and Ice III at the triple point with Ice II.
Using Fig. 6.10: (a) Determine whether ice that forms at P =700 MPa floats or sinks in the liquid water with which it is at equilibrium. (b) Calculate the difference in specific enthalpy between Ice Ih and Ice III at the triple point with Ice II.
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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Transcribed Image Text:Phase diagrams of pure components often contain multiple solid phases (pol-
illustrated in Fig. 6.10, which shows a partial high-pressure phase
(a) Determine whether ice that forms at P=700 MPa floats or sinks in the
liquid water with which it is at equilibrium.
611
Using Fig. 6.10:
(b) Calculate the difference in specific enthalpy between Ice Ih and Ice III
at the triple point with Ice II.
Gibbs
(6.25)
phase rul
red to
ed as
es in
erms
sive
ties
em
as
800
VI
of
ej.
ce,
700
600
500
a 400
II
Liquid
III
300
200
Ih
100
20
-20
-40
-60
0 ("C)
Figure 6.10 Partial phase diagram of water at high pressures. Triple points are shown as
cirdes. Data are from "Revised Release on the Pressure along the Melting and Sublimation
urves of Ordinary Water Substance," International Association of Properties of Water and
eam, (2008) and L. Mercury et al., “Thermodynamics of ice polymorphs and `ice-like' water
in hydrates and hydroxides,", Appl. Geochem. 16, 161-181 (2001).
Show transcribed image text
P (MPa)
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