Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Sent to:
  • Textbooks
  • Test Prep
  • Numerade for Schools
  • Bootcamps
  • Class
  • Ask Question
  • StudyParty
  • Earn Money
    Refer a friend. Get $50! Become an Educator
  • Log in

Problem

The lattice energy of CsF is -744 kJ>mol whereas …
View
preview
Numerade Logo

Get the answer to your homework problem.

Try Numerade free for 7 days

ES
Eugene S.
University of Minnesota - Twin Cities

Like

Report

Problem 1 Problem 2 Problem 3 Problem 4 Problem 5 Problem 6 Problem 7 Problem 8 Problem 9 Problem 10 Problem 11 Problem 12 Problem 13 Problem 14 Problem 15 Problem 16 Problem 17 Problem 18 Problem 19 Problem 20 Problem 21 Problem 22 Problem 23 Problem 24 Problem 25 Problem 26 Problem 27 Problem 28 Problem 29 Problem 30 Problem 31 Problem 32 Problem 33 Problem 34 Problem 35 Problem 36 Problem 37 Problem 38 Problem 39 Problem 40 Problem 41 Problem 42 Problem 43 Problem 44 Problem 45 Problem 46 Problem 47 Problem 48 Problem 49 Problem 50 Problem 51 Problem 52 Problem 52 Problem 53 Problem 55 Problem 56 Problem 57 Problem 58 Problem 59 Problem 60 Problem 61 Problem 62 Problem 63 Problem 64 Problem 65 Problem 66 Problem 67 Problem 68 Problem 69 Problem 70 Problem 71 Problem 72 Problem 73 Problem 74 Problem 75 Problem 76 Problem 77 Problem 78 Problem 79 Problem 80 Problem 81 Problem 82 Problem 83 Problem 84 Problem 85 Problem 86 Problem 87 Problem 88 Problem 89 Problem 90 Problem 91 Problem 92 Problem 93 Problem 94 Problem 95 Problem 96 Problem 97 Problem 98 Problem 99 Problem 100 Problem 101 Problem 102 Problem 103 Problem 104 Problem 105 Problem 106 Problem 107 Problem 108 Problem 109 Problem 110 Problem 111 Problem 112 Problem 113 Problem 114 Problem 115 Problem 116 Problem 117 Problem 118 Problem 119 Problem 120 Problem 121 Problem 122 Problem 123 Problem 124 Problem 125 Problem 126 Problem 127 Problem 128 Problem 129 Problem 130 Problem 131 Problem 132 Problem 133 Problem 134 Problem 135 Problem 136 Problem 137 Problem 138 Problem 139 Problem 140 Problem 141 Problem 142 Problem 143 Problem 144 Problem 145 Problem 146 Problem 147 Problem 148

Problem 92 Easy Difficulty

Rubidium iodide has a lattice energy of -617 kJ>mol, while potassium bromide has a lattice energy of -671 kJ>mol. Why is the lattice energy of potassium bromide more exothermic than the lattice energy of rubidium iodide?

Answer

The lattice energy of potassium bromide is more exothermic than that of Rubidium iodide due to
the difference in sizes of cations and anions. Rubidium is a larger cation than potassium and
iodide ion is larger than bromide ion. This increases the distance between the charges in
Rubidium iodide.
Potential energy decreases as distance between the charges increases according to Coulomb's
law. So larger molecules have lower potential energy. This causes lower lattice energy for
Rubidium iodide.

Related Courses

Chemistry 102

Chemistry 101
Chemistry: Structure and Properties

Chapter 9

Thermochemistry

Related Topics

Thermodynamics

Chemical reactions and Stoichiometry

Thermochemistry

Discussion

You must be signed in to discuss.
Top Chemistry 102 Educators
Theodore D.

Carleton College

Stephanie C.

University of Central Florida

Jacquelin H.

Brown University

Jake R.

University of Toronto

Chemistry 102 Courses

Lectures

Video Thumbnail

00:42
Thermodynamics - Intro

In thermodynamics, the zer…
Video Thumbnail

01:47
Spontaneous And Nonspontaneous Processes - Overview

A spontaneous process is o…
Join Course
Recommended Videos

02:54

Rubidium iodide has a latt…

03:07

Rubidium iodide has a latt…

05:26

Rubidium iodide has a latt…

03:15

The lattice energy of CsF …

01:34

The lattice energy of sodi…

0:00

The lattice energy of CsF …

00:37

The lattice energy of CsF …

00:58

Examine the trends in latt…

01:06

The lattice energy for sod…

0:00

The standard heat of forma…

01:15

The lattice energy of CsF …

03:53

The lattice energy of LiF …

0:00

The lattice energy of LiF …

09:28

Use a Born-Haber cycle to …

09:54

Find the lattice energy of…

01:08

The lattice energy of KF i…

09:06

Given the following values…

02:55

The lattice energies of $\…

15:17

Given the following inform…

05:04

The standard heat of forma…

Watch More Solved Questions in Chapter 9

Problem 1
Problem 2
Problem 3
Problem 4
Problem 5
Problem 6
Problem 7
Problem 8
Problem 9
Problem 10
Problem 11
Problem 12
Problem 13
Problem 14
Problem 15
Problem 16
Problem 17
Problem 18
Problem 19
Problem 20
Problem 21
Problem 22
Problem 23
Problem 24
Problem 25
Problem 26
Problem 27
Problem 28
Problem 29
Problem 30
Problem 31
Problem 32
Problem 33
Problem 34
Problem 35
Problem 36
Problem 37
Problem 38
Problem 39
Problem 40
Problem 41
Problem 42
Problem 43
Problem 44
Problem 45
Problem 46
Problem 47
Problem 48
Problem 49
Problem 50
Problem 51
Problem 52
Problem 52
Problem 53
Problem 55
Problem 56
Problem 57
Problem 58
Problem 59
Problem 60
Problem 61
Problem 62
Problem 63
Problem 64
Problem 65
Problem 66
Problem 67
Problem 68
Problem 69
Problem 70
Problem 71
Problem 72
Problem 73
Problem 74
Problem 75
Problem 76
Problem 77
Problem 78
Problem 79
Problem 80
Problem 81
Problem 82
Problem 83
Problem 84
Problem 85
Problem 86
Problem 87
Problem 88
Problem 89
Problem 90
Problem 91
Problem 92
Problem 93
Problem 94
Problem 95
Problem 96
Problem 97
Problem 98
Problem 99
Problem 100
Problem 101
Problem 102
Problem 103
Problem 104
Problem 105
Problem 106
Problem 107
Problem 108
Problem 109
Problem 110
Problem 111
Problem 112
Problem 113
Problem 114
Problem 115
Problem 116
Problem 117
Problem 118
Problem 119
Problem 120
Problem 121
Problem 122
Problem 123
Problem 124
Problem 125
Problem 126
Problem 127
Problem 128
Problem 129
Problem 130
Problem 131
Problem 132
Problem 133
Problem 134
Problem 135
Problem 136
Problem 137
Problem 138
Problem 139
Problem 140
Problem 141
Problem 142
Problem 143
Problem 144
Problem 145
Problem 146
Problem 147
Problem 148

Video Transcript

So this problem asks, Why is thie lattice energy of potassium bromide more extra thermic than rubidium iodide? So we start with rubidium iodide, which has a lattice energy of negative six seventeen killer Jules per mall, and potassium bromide, which has a lattice energy of negative six seventy one Kila Jules per mall. And so the reason that potassium bromide is mohr XO thermic is because lattice energy is inversely proportional to atomic radius. So a larger atomic radius means that it's less XO thermic for lattice energy. And so, since K B R has a smaller atomic radius, it's going to have a mohr XO thermic lattice energy.

Get More Help with this Textbook
Nivaldo Tro

Chemistry: Structure and Properties

View More Answers From This Book

Find Another Textbook

Related Topics

Thermodynamics

Chemical reactions and Stoichiometry

Thermochemistry
Top Chemistry 102 Educators
Theodore D.

Carleton College

Stephanie C.

University of Central Florida

Jacquelin H.

Brown University

Jake R.

University of Toronto

Chemistry 102 Courses

Lectures

Video Thumbnail

00:42
Thermodynamics - Intro

In thermodynamics, the zeroth law of thermodynamics states that if two syste…
Video Thumbnail

01:47
Spontaneous And Nonspontaneous Processes - Overview

A spontaneous process is one in which the total entropy of the universe incr…
Join Course
Recommended Videos

02:54

Rubidium iodide has a lattice energy of -617 kJ>mol, while potassium brom…

03:07

Rubidium iodide has a lattice energy of $-617 \mathrm{kJ} / \mathrm{mol},$ w…

05:26

Rubidium iodide has a lattice energy of $-617 \mathrm{k} / \mathrm{mol},$ wh…

03:15

The lattice energy of CsF is $-744 \mathrm{kJ} / \mathrm{mol},$ whereas that…

01:34

The lattice energy of sodium chloride, $\mathrm{NaCl}$, is $-787.5 \mathrm{k…

0:00

The lattice energy of CsF is -744 kJ>mol whereas that of BaO is-3029 kJ&g…

00:37

The lattice energy of CsF is -744 kJ>mol, whereas that of BaO is -3029 kJ…

00:58

Examine the trends in lattice energy in Table $12.1 .$ The value of the latt…

01:06

The lattice energy for sodium iodide is 700 $\mathrm{kJ} / \mathrm{mol}$ , w…

0:00

The standard heat of formation of CaBr2 is -675 kJ>mol. The first ionizat…

01:15

The lattice energy of CsF is $-744$ kJ/mol whereas that of $B a O$ is $-3029…

03:53

The lattice energy of LiF is 1023 kJ/mol, and the Li–F distance is 201 pm. M…

0:00

The lattice energy of LiF is 1023 kJ/mol, and the Li–F distance is 200.8 pm.…

09:28

Use a Born-Haber cycle to calculate the lattice energy of potassium chloride…

09:54

Find the lattice energy of LiBr(s) in Table $6.3,$ and calculate the energy …

01:08

The lattice energy of KF is 794 kJ/mol, and the interionic distance is 269 p…

09:06

Given the following values for the formation of $LiCl(s)$ from its elements,…

02:55

The lattice energies of $\mathrm{FeCl}_{3}, \mathrm{FeCl}_{2},$ and $\mathrm…

15:17

Given the following information, construct a Born-Haber cycle to calculate t…

05:04

The standard heat of formation of CaBr_ $_{2}$ is $-675 \mathrm{kJ} / \mathr…

Additional Chemistry Questions
a-buffer-contains-significant-amounts-of-acetic-acid-and-sodium-acetate-write-equations-that-demon

04:07

A buffer contains significant amounts of acetic acid and sodium
acetate. …

dry-ice-is-solid-carbon-dioxide-instead-of-melting-solid-carbon-dioxide-sublimes-according-to-the

02:43

Dry ice is solid carbon dioxide. Instead of melting, solid carbon
dioxide…

a-compound-has-the-formula-c8h8-and-does-not-contain-any-double-or-triple-bonds-all-the-carbon-atom

02:41

A compound has the formula C8H8 and does not contain any double or triple bo…

calculate-hrxn-for-the-reaction-use-the-following-reactions-and-given-h-values-4

05:03

Calculate Hrxn for the reaction:

Use the following reactions and gi…

which-buffer-system-is-the-best-choice-to-create-a-buffer-with-ph-720-for-the-best-system-calcu

09:53

Which buffer system is the best choice to create a buffer with pH = 7.20? Fo…

use-the-henderson-hasselbalch-equation-to-calculate-the-ph-of-each-solution-a-a-solution-that-is

12:02

Use the Henderson-Hasselbalch equation to calculate the pH of
each soluti…

draw-the-lewis-structure-for-acetamide-ch3conh2-an-organic-compound-and-determine-the-geometry-a

02:20

Draw the Lewis structure for acetamide (CH3CONH2), an organic compound, and …

calculate-the-ratio-of-naf-to-hf-required-to-create-a-buffer-with-ph-400

03:47

Calculate the ratio of NaF to HF required to create a buffer with pH = 4.00.…

a-5000-ml-buffer-solution-is-0100-m-in-hno2-and-0150-m-in-kno2-determine-whether-each-addition

10:34

A 500.0-mL buffer solution is 0.100 M in HNO2 and 0.150 M in
KNO2. Determ…

each-compound-contains-both-ionic-and-covalent-bonds-write-ionic-lewis-structures-for-each-includi-2

06:18

Each compound contains both ionic and covalent bonds. Write ionic Lewis stru…

Add To Playlist

Hmmm, doesn't seem like you have any playlists. Please add your first playlist.

Create a New Playlist

`

Share Question

Copy Link

OR

Enter Friends' Emails

Report Question

Get 24/7 study help with our app

Available on iOS and Android

About
  • Our Story
  • Careers
  • Our Educators
  • Numerade Blog
Browse
  • Bootcamps
  • Books
  • Topics
  • Test Prep
  • Ask Directory
Support
  • Help
  • Privacy Policy
  • Terms of Service
Get started