Chemistry
9th Edition
ISBN: 9781133611097
Author: Steven S. Zumdahl
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 65E
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
Expert Solution & Answer
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Students have asked these similar questions
2. Use the table below to estimate AH for the
reaction NO + O3 → NO2 + O2. Does this
reaction consume or produce heat?
Single Bond Energies (kJ/mol of bonds)
н сN oS F C Br I
Н 436
C 413 346
N 391 305 163
O 463 358 201 146
S 347 272
226
-
F 565 485 283 190 284 155
Cl 432 339 192 218 255 253 242
Br 366 285
201 217 249 216 193
-
I 299 213
201
278 208 175 151
-
-
Multiple Bond Energies (kJ/mol of bonds)
C=C 602
C=N 615
C=O 799
C=C 835
CEN 887
C=O 1072
N=N 418
N=O 607
N=N 945
O=O 498
The conversion of graphite into diamond is an endothermic reaction
(AH = +3 kJ mol-1).
C(graphite) → C(diamond)
1
The enthalpy change of atomisation of diamond is smaller than that of
graphite.
The bond energy of the C-C bonds in graphite is greater than that in
diamond.
2
The enthalpy change of combustion of diamond is greater than that of
graphite.
3
Which statements are correct?
A 1, 2 and 3
B 1 and 2 only C 2 and 3 only D 1 only
Use the table provided to estimate AH for the reaction O3 (g) + O (g)
→2 O2 (g). Does this reaction consume or produce heat?
Single Bond Energies (kJ/mol of bonds)
N OS
H.
F
Cl Br
I
Н 436
C 413 346
N 391 305 163
O 463 358 201 146
S 347 272
226
F 565 485 283 190 284 155
Cl 432 339 192 218 255 253 242
Br 366 285
201 217 249 216 193
I 299 213
201
278 208 175 151
Multiple Bond Energies (kJ/mol of bonds)_
C=C 602
C=N 615
C=O 799
C=C 835
CEN 887
C=O 1072
N=N 418
N=O 607
NEN 945
O=0 498
Chapter 8 Solutions
Chemistry
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