TABLE 8.6 Average Bond Dissociation Energies and Bond Lengths for Some Common Covalent Bonds Energy Length Energy Length Bond (kJ/mol) (pm) (kJ/mol) (pm) H-H 432 H-F 565 H-Ɑ 427 H-Br 363 H-I 295 C-H C-F C-Cl C-Br 75 92 127 141 161 413 485 339 276 240 347 614 839 120 305 143 615 138 891 116 *C-O bond energy in CO₂ is 799 kJ/mol. 109 135 177 194 214 154 134 Bond N-H NF N-Cl N-Br N-N N=N N=N 0-H 0-F 0-Cl 0-1 0-0 0-0 C-O C=O C=0 391 272 200 243 160 418 941 467 190 203 234 146 495 358 745* 1072 101 136 175 189 145 125 110 96 142 172 206 148 121 143 120 113 Bond F-F F-Cl F-Br F-I CI-CI Cl-Br CI-I Br-Br Br-1 H S-H S-F S-Br S-S Energy Length (kJ/mol) (pm) 1) CH4 (g) + Br2 (g) --> CH3Br (g) + HBr (g) H H-C-H Br - Br H-C-Br H-Br Bond Breaking Bond Making H 154 253 237 273 239 218 208 193 175 149 363 327 253 218 226 Use bond enthalpy values to calculate the enthalpy change for the following reaction. Then, label if the reaction is endothermic or exothermic. 142 165 176 191 199 214 232 228 247 267 134 156 207 216 205
TABLE 8.6 Average Bond Dissociation Energies and Bond Lengths for Some Common Covalent Bonds Energy Length Energy Length Bond (kJ/mol) (pm) (kJ/mol) (pm) H-H 432 H-F 565 H-Ɑ 427 H-Br 363 H-I 295 C-H C-F C-Cl C-Br 75 92 127 141 161 413 485 339 276 240 347 614 839 120 305 143 615 138 891 116 *C-O bond energy in CO₂ is 799 kJ/mol. 109 135 177 194 214 154 134 Bond N-H NF N-Cl N-Br N-N N=N N=N 0-H 0-F 0-Cl 0-1 0-0 0-0 C-O C=O C=0 391 272 200 243 160 418 941 467 190 203 234 146 495 358 745* 1072 101 136 175 189 145 125 110 96 142 172 206 148 121 143 120 113 Bond F-F F-Cl F-Br F-I CI-CI Cl-Br CI-I Br-Br Br-1 H S-H S-F S-Br S-S Energy Length (kJ/mol) (pm) 1) CH4 (g) + Br2 (g) --> CH3Br (g) + HBr (g) H H-C-H Br - Br H-C-Br H-Br Bond Breaking Bond Making H 154 253 237 273 239 218 208 193 175 149 363 327 253 218 226 Use bond enthalpy values to calculate the enthalpy change for the following reaction. Then, label if the reaction is endothermic or exothermic. 142 165 176 191 199 214 232 228 247 267 134 156 207 216 205
General, Organic, and Biological Chemistry
7th Edition
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:H. Stephen Stoker
Chapter5: Chemical Bonding: The Covalent Bond Model
Section: Chapter Questions
Problem 5.76EP: Four hypothetical elements, A, B, C, and D, have electronegativities A = 3.4, B = 3.1, C = 2.5, end...
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The attractive force which has the ability of holding various constituent elements like atoms, ions, molecules, etc. together in different chemical species is termed as a chemical bond. Chemical compounds are dependent on the strength of chemical bonds between its constituents. Stronger the chemical bond, more will be the stability in the chemical compounds. Hence, it can be said that bonding defines the stability of chemical compounds.
Polarizability In Organic Chemistry
Polarizability refers to the ability of an atom/molecule to distort the electron cloud of neighboring species towards itself and the process of distortion of electron cloud is known as polarization.
Coordinate Covalent Bonds
A coordinate covalent bond is also known as a dative bond, which is a type of covalent bond. It is formed between two atoms, where the two electrons required to form the bond come from the same atom resulting in a semi-polar bond. The study of coordinate covalent bond or dative bond is important to know about the special type of bonding that leads to different properties. Since covalent compounds are non-polar whereas coordinate bonds results always in polar compounds due to charge separation.
Question
Transcribed Image Text:TABLE 8.6 Average Bond Dissociation Energies and Bond Lengths for Some Common Covalent Bonds
Energy Length
Bond (kJ/mol) (pm)
Energy Length
(kJ/mol) (pm)
H-H
432
H-F
565
H-C
427
H-Br 363
H-I
295
C-H
C-F
C-Cl
C-Br
C-I
C-C
C=C
75
92
127
141
161
109
135
177
194
214
154
134
120
143
138
116
413
485
339
276
240
347
614
839
C-N
305
C=N
615
C=N
891
*C-O bond energy in CO₂ is 799 kJ/mol.
Bond
N-H
N-F
N-Cl
N-Br
N-N
N=N
N=N
0-H
0-F
0-Cl
0-1
0-0
0-0
C-0
C=0
C=0
391
272
200
243
160
418
941
467
190
203
234
146
495
358
745*
1072
101
136
175
189
145
125
110
96
142
172
206
148
121
143
120
113
Bond
Energy Length
(kl/mol) (pm)
F-F
154
F-Cl
253
F-Br
237
F-I
273
CI-CI 239
Cl-Br
218
CI-I
208
Br-Br
193
Br-I
175
H
S-H
S-F
S-CL
S-Br
S-S
1) CH4 (g) + Br2 (g) --> CH3Br (g) + HBr (g)
H
H-Ć -H
Br - Br
H-C-Br
H-Br
Bond Breaking
Bond Making
H
149
363
327
253
218
226
Use bond enthalpy values to calculate the enthalpy
change for the following reaction. Then, label if the
reaction is endothermic or exothermic.
142
165
176
191
199
214
232
228
247
267
134
156
207
216
205
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