91 106.42 107.87 112.41 114.82 118.71 121.76 127.60 Which of the following molecules will have the SHORTEST bond length? Select one: O a. N₂ O b. 0₂ O c. BrCl O d. Br₂
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![1
H
1.008
3
4
Li Be
6.94
9.012
11
12
Na Mg
22.990 24.305
19
20
37
21
25
26
K
Ca Sc
Sc
Ti
Ti
Co
Ni
Mn Fe
54.938
39.098 40.078 44 956 47.867
39
55.845 58.933 58.693
45 46
38
40
41
42
43
44
Rb Sr
Y
Zr Nb Mo Tc Ru Rh Pd
85.468 87.62 88.906 91.224 92.906 95.95 (97) 101.07 102.91
Which of the following molecules will have the SHORTEST bond length?
Select one:
O a. N₂
O b. 0₂
O c. BrCl
O d. Br₂
22
23
24
V Cr
50.942 51.996
27
28
29
30
Cu
Zn
63.546 65.38
2
6
8
9
10
B C N O F Ne
10.81 12.011 14.007 15.999 18.998 20.180
13 14 15
17
18
16
31
32
Al Si P S Cl Ar
26.982 28.085 30.974 32.06 35.45 39.948
33
69.723 72.630 74.922 78.971 79.904 83.798
34
Ga Ge As Se
35 36
Se Br Kr
49 50 51 52 53
Te
-
He
4.003
47
48
Pd Ag Cd In Sn Sb
Sb
Xe
106.42 107.87 112.41 114.82 118.71 121.76 127.60 6.90 131.29
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