Use the data in the table above to calculate an approximate AH° in kilojoules for the synthesis of hydrazine from ammonia: 2 NH3(9) + Cl2 (9) –→ N2H«(9) +2 HC1(9) Express your answer to two significant figures and include the appropriate units. HÀ ? ΔΗn Value Units

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Average Bond Dissociation Energies, D (kJ/mol)
Н-Н
436
C-H
410
N-H
390
0-F
180
I-I
151
Н-С
410
C-C
350
N-C
300
0–Cl
200
S-F
310
H-F
570
C-F
450
N-F
270
О-Br
210
S-CI
250
H-CI
432
C-C1
330
N-C1
200
0-I
220
S-Br
210
H-Br
366
C-Br
270
N-Br
240
О-N
200
S-S
225
H-I
298
C-I
240
N-N
240
0-0
180
H-N
390
C-N
300
N-O
200
F-F
159
H-O
460
C-0
350
O-H
460
Cl-CI
243
H-S
340
C-S
260
0-C
350
Br-Br
193
Multiple covalent bonds
C=C
728
C=C
965
C=0
732
0=0
498
N=N
945
Part A
Use the data in the table above to calculate an approximate AH° in kilojoules for the synthesis of hydrazine from ammonia:
2 NH3(g) + Cl2 (g) → N2H4(g) +2 HCI(g)
Express your answer to two significant figures and include the appropriate units.
HA
?
AH°rxn =
Value
Units
o.
IXn
Transcribed Image Text:Average Bond Dissociation Energies, D (kJ/mol) Н-Н 436 C-H 410 N-H 390 0-F 180 I-I 151 Н-С 410 C-C 350 N-C 300 0–Cl 200 S-F 310 H-F 570 C-F 450 N-F 270 О-Br 210 S-CI 250 H-CI 432 C-C1 330 N-C1 200 0-I 220 S-Br 210 H-Br 366 C-Br 270 N-Br 240 О-N 200 S-S 225 H-I 298 C-I 240 N-N 240 0-0 180 H-N 390 C-N 300 N-O 200 F-F 159 H-O 460 C-0 350 O-H 460 Cl-CI 243 H-S 340 C-S 260 0-C 350 Br-Br 193 Multiple covalent bonds C=C 728 C=C 965 C=0 732 0=0 498 N=N 945 Part A Use the data in the table above to calculate an approximate AH° in kilojoules for the synthesis of hydrazine from ammonia: 2 NH3(g) + Cl2 (g) → N2H4(g) +2 HCI(g) Express your answer to two significant figures and include the appropriate units. HA ? AH°rxn = Value Units o. IXn
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