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(a) Write the chemical equations that are used in

Chemistry: The Central Science | 12th Edition | ISBN: 9780321696724 | Authors: Theodore E. Brown

Problem 102IE Chapter 8

Chemistry: The Central Science | 12th Edition

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Chemistry: The Central Science | 12th Edition | ISBN: 9780321696724 | Authors: Theodore E. Brown

Chemistry: The Central Science | 12th Edition

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Problem 102IE

(a) Write the chemical equations that are used in calculating the lattice energy of SrCl2(s) via a Born–Haber cycle. (b) The second ionization energy of Sr(g) is 1064 kJ/mol. Use this fact along with data in Appendix C, Figure, Figure, and Table to calculate ΔHf° for SrCl2(s).

The value for astatine, At, is missing in this figure. To the nearest 100 kJ>mol, what estimate would you make for the first ionization energy of At?

Figure Trends in first ionization energies of the elements.

Why are the electron affinities of the Group 4A elements more negative than those of the Group 5A elements?

Figure Electron affinity in kJ/mol for selected s-and p-block elements.

Table Lattice Energies for Some Ionic Compounds

Compound

Lattice Energy (kJ/mol)

Compound

Lattice Energy (kJ/mol)

LiF

1030

MgCl2

2326

LiCl

834

SrCl2

2127

LiI

730

 

 

NaF

910

MgO

3795

NaCl

788

CaO

3414

NaBr

732

SrO

3217

NaI

682

 

 

KF

808

ScN

7547

KCl

701

 

 

KBr

671

 

 

CsCl

657

 

 

CsI

600

 

 

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Chapter 8, Problem 102IE is Solved
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Textbook: Chemistry: The Central Science
Edition: 12
Author: Theodore E. Brown
ISBN: 9780321696724

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