Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 69E
Use bond energy values (Table 3-3) to estimate ∆E for each of the following reactions in the gas phase.
a. H2 + Cl2 → 2HCl
b. N ≡ N + 3H2 → + 2NH3
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Use the molar bond enthalpy data in the table to estimate the value of Δ?∘rxn for the equation
NH3 (g) + 2 O2 (g) --> HNO3 (g) + H20 (g)
Average molar bond enthalpies. (?bond)
Bond
??⋅???−1
Bond
??⋅???−1
O−H
464
C≡N
890
O−O
142
N−H
390
C−O
351
N−O
201
O=O
502
N=N
418
C=O
730
N=O
607
C−C
347
F−F
155
C=C
615
Cl−Cl
243
C≡C
811
Br−Br
192
C−H
414
H−H
435
C−F
439
H−F
565
C−Cl
331
H−Cl
431
C−Br
276
H−Br
368
C−N
293
H−S
364
C=N
615
S−S
225
A.) What is the heat of reaction, ΔH°?
CO2(g) + H2O(l) à H2CO3(aq)
–20.2 kJ mol–1
–1379 kJ mol–1
–592 kJ mol–1
B.)
What is the average bond energy in CO2?
CO2(g) ΔH°f, = –393.5 kJ mol–1
CO(g) ΔH°f, = –110.5 kJ mol–1
C(g) ΔH°f, = +715 kJ mol–1
CO32–(aq) ΔH°f, = –676.3 kJ mol–1
O(g) ΔH°f, = +249.0 kJ mol–1
207 kJ mol–1
1607 kJ mol–1
804 kJ mol–1
Use the molar bond enthalpy data in the table to estimate the value of Δ?∘rxnΔHrxn° for the equation
C2H4 (g) + HBr (g) --> C2H5Br (g)
Average molar bond enthalpies. (?bond)(Hbond)
Bond
??⋅???−1kJ⋅mol−1
Bond
??⋅???−1kJ⋅mol−1
O−HO−H
464464
C≡NC≡N
890890
O−OO−O
142142
N−HN−H
390390
C−OC−O
351351
N−NN−N
159159
O=OO=O
502502
N=NN=N
418418
C=OC=O
730730
N≡NN≡N
945945
C−CC−C
347347
F−FF−F
155155
C=CC=C
615615
Cl−ClCl−Cl
243243
C≡CC≡C
811811
Br−BrBr−Br
192192
C−HC−H
414414
H−HH−H
435435
C−FC−F
439439
H−FH−F
565565
C−ClC−Cl
331331
H−ClH−Cl
431431
C−BrC−Br
276276
H−BrH−Br
368368
C−NC−N
293293
H−SH−S
364364
C=NC=N
615615
S−SS−S
225225
Chapter 8 Solutions
Chemistry
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Show all...Ch. 8 - Prob. 94ECh. 8 - Benzene (C6H6) consists of a six-membered ring of...Ch. 8 - Borazine (B3N3H6) has often been called inorganic...Ch. 8 - An important observation supporting the concept of...Ch. 8 - Consider the following bond lengths: CO143pmC9O123...Ch. 8 - A toxic cloud covered Bhopal, India, in December...Ch. 8 - Prob. 103ECh. 8 - Prob. 104ECh. 8 - Write Lewis structures that obey the octet rule...Ch. 8 - Write Lewis structures for the species in Exercise...Ch. 8 - Oxidation of the cyanide ion produces the stable...Ch. 8 - When molten sulfur reacts with chlorine gas, a...Ch. 8 - Carbon and sulfur form compounds with each other...Ch. 8 - Prob. 112ECh. 8 - Predict the molecular structure and bond angles...Ch. 8 - Predict die molecular structure and bond angles...Ch. 8 - There are several molecular structures based on...Ch. 8 - Two variations of the octahedral geometry (see...Ch. 8 - Prob. 117ECh. 8 - Consider the molecular structures illustrated in...Ch. 8 - Predict the molecular structure (including bond...Ch. 8 - Predict the molecular structure (including bond...Ch. 8 - Predict the molecular structure (including bond...Ch. 8 - Predict the molecular structure (including bond...Ch. 8 - Prob. 123ECh. 8 - Which of the molecules in Exercise 120 have net...Ch. 8 - Which of the molecules in Exercise 121 have net...Ch. 8 - Which of the molecules in Exercise 122 have net...Ch. 8 - Write Lewis structures and predict the molecular...Ch. 8 - Write Lewis structures and predict whether each of...Ch. 8 - Consider the following Lewis structure where E is...Ch. 8 - Consider the following Lewis structure where E is...Ch. 8 - Two different compounds exist having the formula...Ch. 8 - Two different compounds have the formula XeF2Cl2....Ch. 8 - Arrange the following in order of increasing...Ch. 8 - For each of the following, write an equation that...Ch. 8 - Use bond energies (table 3-3), values of electron...Ch. 8 - Write Lewis structures for CO32, HCO3, and H2CO3....Ch. 8 - Which member of the following pairs would you...Ch. 8 - What do each of the following sets of...Ch. 8 - Prob. 139AECh. 8 - Although both Br3 and I3 ions are known, the F3...Ch. 8 - Prob. 142AECh. 8 - Which of the following molecules have not dipole...Ch. 8 - Prob. 145AECh. 8 - Look up the energies for the bonds in CO and N2....Ch. 8 - Classify the bonding in each of the following...Ch. 8 - List the bonds PCl, PF, OF, and SiF from least...Ch. 8 - Arrange the atoms and/or ions in the following...Ch. 8 - Use the following data to estimate E for the...Ch. 8 - Use bond energy values to estimate E for the...Ch. 8 - Which of the following compounds or ions exhibit...Ch. 8 - The formulas of several chemical substances are...Ch. 8 - Predict the molecular structure, bond angles, and...Ch. 8 - Use Coulombs Jaw, V=Q1Q240r=2.311019Jnm(Q1Q2r) to...Ch. 8 - Prob. 156CPCh. 8 - Calculate the standard heat of formation of the...Ch. 8 - Given the following information: Energy of...Ch. 8 - Prob. 159CPCh. 8 - Think of forming an ionic compound as three steps...Ch. 8 - The compound NF3 is quite stable, but NCl3, is...Ch. 8 - Three processes that have been used for the...Ch. 8 - The compound hexaazaisowurtzitane is one of the...Ch. 8 - Many times extra stability is characteristic of a...Ch. 8 - The study of carbon-containing compounds and their...Ch. 8 - Draw a Lewis structure for the N,...Ch. 8 - Prob. 167CPCh. 8 - Consider the following computer-generated model of...Ch. 8 - Cholesterol (C27H46O) has the following structure:...Ch. 8 - A compound, XF5, is 42.81% fluorine by mass....Ch. 8 - Identify the following elements based on their...
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