iv) Determine the volume change ΔV for the transformation from rhombic to monoclinic sulphur.

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
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iv) Determine the volume change ΔV for the transformation from rhombic to
monoclinic sulphur.
v) Estimate the pressure at wh
ich rhombic and monoclinic sulphur coexist in equilibrium at a temperature of 373 K.
2. Below is the phase diagram of sulphur. At 95.4°C, the densities of rhombic and
monoclinic sulphur are 2.07 g cm³ and 1.96 g cm³, whilst the enthalpy change for
phase transition from rhombic to monoclinic sulphur is 0.3 kJ mol1.
Sulfur
153°C,
Liquid
1420 atm
95.4°C
115.21°C
1 atm
P
Monoclinic
444.6°C
115.2°C,
3.2 x 10-5 atm
Rhombic
95.3°C,
5.1 x 10-6 atm
Gas
T
Transcribed Image Text:2. Below is the phase diagram of sulphur. At 95.4°C, the densities of rhombic and monoclinic sulphur are 2.07 g cm³ and 1.96 g cm³, whilst the enthalpy change for phase transition from rhombic to monoclinic sulphur is 0.3 kJ mol1. Sulfur 153°C, Liquid 1420 atm 95.4°C 115.21°C 1 atm P Monoclinic 444.6°C 115.2°C, 3.2 x 10-5 atm Rhombic 95.3°C, 5.1 x 10-6 atm Gas T
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