Answered: 153°C, 1420 atm. Monoclinic Liquid…

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

Sulphur exhibits two solid phases, rhomic and monoclinic. Use the accompanying phase diagram for sulfur to answer the following questions. (The phase diagram is not to scale.)

a. How many triple points are in the phase diagram?

b. What phases are in equilibrium at each of the triple points?

c. What is the stable phase at 1 atm and 100.°C?

d. What are the normal melting point and the normal boiling point of sulphur?

e. Which is the denest phase?

f. At a pressure of 1.0 x 10^-5 atm, can rhombic sulphur sublime?

g. What phase changes occur when the pressure on a sample of sulphur at 100.°C is increased from 1.0 x 10^-8 atm to 1500 atm?

153°C,
1420 atm.
Monoclinic
Liquid
95.39°C,
1 atm
115.21°C,
1 atm
444.6°C,
1 atm
1 atm
Rhombic
115.18°C
3.2 x 10 atm
Gas
95.31°C,
5.1 x 10- atm
Temperature
Pressure

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