General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.126QP
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Question
Transcribed Image Text:What is the heat of reaction, AH°, in kJ at 25°C for the reaction below?
C(g) + 2H(g) + 2Br(g) > CH2B12(g)
Just enter a number (no units).
Table 9.2
Average Bond Energles (kl/mol) and Bond Lengths (pm)
Bond Energy Length
Bond Energy Length
Bond Energy Length
Energy Length
Bond
Single Bonds
H-H
432
74
N-H
391
101
Si-H
323
148
S-H
347
134
H-F
565
92
N-N
160
146
Si-Si
226
234
S-S
266
204
H-CI
427
127
N-P
209
177
Si-O
368
161
S-F
327
158
H-Br
363
141
N-0
201
144
Si-S
226
210
S-CI
271
201
H-I
295
161
N-F
272
139
Si-F
565
156
S-Br
218
225
N-CI
200
191
Si-CI
381
204
S-I
-170
234
C-H
413
109
N-Br
243
214
Si-Br
310
216
C-C
347
154
N-I
159
222
Si-I
234
240
F-F
159
143
C-si
301
186
F-a
193
166
C-N
305
147
0-H
467
96
P-H
320
142
F-Br
212
178
C-0
358
143
0-P
351
160
P-Si
213
227
F-I
263
187
C-P
264
187
0-0
204
148
P-P
200
221
CI-CI
243
199
C-S
259
181
0-S
265
151
P-F
490
156
CI-Br
215
214
C-F
453
133
0-F
190
142
P-CI
331
204
CI-I
208
243
C-CI
339
177
0-CI
203
164
P-Br
272
222
Br-Br
193
228
C-Br
276
194
0-Br
234
172
P-I
184
246
Br-I
175
248
C-I
216
213
0-1
234
194
I-I
151
266
Multiple Bonds
C=C
614
134
N=N
418
122
C=c
839
121
N=N
945
110
C=N
615
127
N=0
607
120
C=N
891
115
N=0
631
106
C=0
745
123
498
121
C=0
1070
113
(799 in CO,)
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