Fundamentals of Chemical Engineering Thermodynamics (MindTap Course List)
Fundamentals of Chemical Engineering Thermodynamics (MindTap Course List)
1st Edition
ISBN: 9781111580704
Author: Kevin D. Dahm, Donald P. Visco
Publisher: Cengage Learning
Question
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Chapter 8.5, Problem 3E

(A)

Interpretation Introduction

Interpretation:

The boiling points of n-hexane using the Antoine equation.

Concept Introduction:

The Antoine equation is,

log10(Psat)=ABT+C

Here, Antoine coefficients are A, B, and C, vapor pressure is Psat, and temperature is T.

(B)

Interpretation Introduction

Interpretation:

The boiling points of n-hexane using the Clausius-Clapeyron equation.

Concept Introduction:

The Clausius-Clapeyron equation is,

ln(P2satP1sat)=ΔH_vapR(1T21T1)

Here, gas constant is R, temperature at state 1 and 2 is T1andT2 respectively, vapor pressure at state 1 and 2 is P1satandP2sat respectively, and change in molar enthalpy from vaporization is ΔH_vap.

(C)

Interpretation Introduction

Interpretation:

The boiling points of n-hexane using the shortcut equation.

Concept Introduction:

The shortcut vapor pressure equation is,

log10Prsat=73(ω+1)(11Tr)Tr=[1Tclog(PsatPc)(ω+1)Tc(37)]1

Here, reduced temperature is Tr, critical temperature is Tc, critical pressure is Pc, acentric factor is ω, and reduced pressure at saturated point is Prsat.

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