EBK INTRODUCTION TO CHEMICAL ENGINEERIN
EBK INTRODUCTION TO CHEMICAL ENGINEERIN
8th Edition
ISBN: 9781259878091
Author: SMITH
Publisher: MCGRAW HILL BOOK COMPANY
Question
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Chapter 15, Problem 15.18P

(a)

Interpretation Introduction

Interpretation:

To develop Rule of thumb: Solubility of a solid in a liquid solvent increases with increasing T.

Concept Introduction:

The given rule of thumb is based on case II binary SLE behavior.

Let the solid be pure species 1 and the Liquid solvent be species 2.

Then x1=ψ1andψ1=expΔH1slRTm1(TTm1T)

(b)

Interpretation Introduction

Interpretation:

To develop Rule of thumb: Solubility of a solid in a liquid solvent is independent of the identity of the solvent species

Concept Introduction:

The given rule of thumb is based on case II binary SLE behavior.

Let the solid be pure species 1 and the Liquid solvent be species 2.

Then x1=ψ1andψ1=expΔH1slRTm1(TTm1T)

(c)

Interpretation Introduction

Interpretation:

To develop Rule of thumb: Of 2 solids with roughly the same heat of fusion, that solid with the lower melting point is the more soluble in a given liquid solvent at a given T

Concept Introduction:

The given rule of thumb is based on case II binary SLE behavior.

Let the solid be pure species 1 and the Liquid solvent be species 2.

Then x1=ψ1andψ1=expΔH1slRTm1(TTm1T)

(d)

Interpretation Introduction

Interpretation:

To develop Rule of thumb: Of 2 solids with similar melting points, that solid with the smaller heat of fusion is the more soluble in a given liquid solvent at a given T

Concept Introduction:

The given rule of thumb is based on case II binary SLE behavior.

Let the solid be pure species 1 and the Liquid solvent be species 2.

Then x1=ψ1andψ1=expΔH1slRTm1(TTm1T)

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1. Consider a mixture of 2.5.0% ethane, 2.0% butane, and 1.7% n-pentane by volume.a. Estimate the LFL and UFL of the mixture. Is it flammable?b. Estimate the LOC for this mixture.
Estimate the LFL and UFL for propylene using Equations 6-10 and 6-11 in the textbook,and compare these to the experimental values given in the table in Appendix B.
1. Determine the minimum compression ratio required to raise the temperature of air overhexane to its AIT. Assume an initial temperature of 20°C.2. Ethanol is kept in a storage vessel that is vented with air (at 25°C and 1 atm). Is theequilibrium mixture of vapor above the liquid and air flammable? What if the liquid isacetone instead?

Chapter 15 Solutions

EBK INTRODUCTION TO CHEMICAL ENGINEERIN

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