Average Bond Energies (kJ/mol)BondEnergyBondEnergyBondEnergyBondEnergySingle BondsH-H432N-H391Si-H323S-H347H-F565N-N160Si-Si226S-S266H-CI427N-P209Si-0368S-F327H-Br363N-O201Si-S226S-CI271H-I295N-F272Si-F565S-Br218N-CI200Si-CI381S-I-170C-H413N-Br243Si-Br310C-C347N-I159Si-I234F-F159С—Si301F-CI193C-N3050-H467P-H320F-Br212C-03580-P351P-Si213F-I263С—Р2640-0204P-P200Cl-CI243C-S2590-S265P-F490CI-Br215C-F4530-F190P-CI331CI-I208C-CI3390-CI203P-Br272Br-Br193C-Br2760-Br234P-I184Br-I175C-I2160-I234I-I151Multiple BondsC=C614N=N418C=C839N=N945C=N615N=0607C=N891C=0745O2498C=01070(799 in CO2) Hydrogen cyanide (and organic nitriles, which contain the cyano group) can be catalytically reduced with hydrogen to form amines. Use Lewis structures and bond energies to determine AH for the reaction below. (See Table 9.2 for bondenergies.)kJHCN(g) + 2 H2(g)→ CH3NH2(g)

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Hydrogen cyanide (and organic nitriles, which contain the cyano group) can be catalytically reduced with hydrogen to form amines. Use Lewis structures and bond energies to determine AH for the reaction below. (See Table 9.2 for bond energies.) kJ HCN(g) + 2 H2(g) → CH3NH2(g)

Hydrogen cyanide (and organic nitriles, which contain the cyano group) can be catalytically reduced with hydrogen to form amines. Use Lewis structures and bond energies to determine AH for the reaction below. (See Table 9.2 for bond energies.) kJ HCN(g) + 2 H2(g) → CH3NH2(g)

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter6: Covalent Bonding

Section6.6: Bond Properties: Bond Length; Bond Energy

Problem 6.6CE

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Concept explainers

Types of Chemical Bonds

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

Average Bond Energies (kJ/mol)
Bond
Energy
Bond
Energy
Bond
Energy
Bond
Energy
Single Bonds
H-H
432
N-H
391
Si-H
323
S-H
347
H-F
565
N-N
160
Si-Si
226
S-S
266
H-CI
427
N-P
209
Si-0
368
S-F
327
H-Br
363
N-O
201
Si-S
226
S-CI
271
H-I
295
N-F
272
Si-F
565
S-Br
218
N-CI
200
Si-CI
381
S-I
-170
C-H
413
N-Br
243
Si-Br
310
C-C
347
N-I
159
Si-I
234
F-F
159
С—Si
301
F-CI
193
C-N
305
0-H
467
P-H
320
F-Br
212
C-0
358
0-P
351
P-Si
213
F-I
263
С—Р
264
0-0
204
P-P
200
Cl-CI
243
C-S
259
0-S
265
P-F
490
CI-Br
215
C-F
453
0-F
190
P-CI
331
CI-I
208
C-CI
339
0-CI
203
P-Br
272
Br-Br
193
C-Br
276
0-Br
234
P-I
184
Br-I
175
C-I
216
0-I
234
I-I
151
Multiple Bonds
C=C
614
N=N
418
C=C
839
N=N
945
C=N
615
N=0
607
C=N
891
C=0
745
O2
498
C=0
1070
(799 in CO2)

Hydrogen cyanide (and organic nitriles, which contain the cyano group) can be catalytically reduced with hydrogen to form amines. Use Lewis structures and bond energies to determine AH for the reaction below. (See Table 9.2 for bond
energies.)
kJ
HCN(g) + 2 H2(g)
→ CH3NH2(g)

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