Upload
reynal-dasukma-hidayat
View
354
Download
45
Embed Size (px)
Citation preview
Contoh soalDiketahui diagram siklus Hess
Tentukan entalpi standar pembentukan gas CO2!
Jawab:
Menurut Hukum Hess:
H1 = H2 + H3
H1 = –222 + (–566) kJ
H1 = –788 kJ
maka Hf
° gas CO2 = 788
2 = –394 kJmol–1
ENERGI IKATAN
IKATAN Kkal/mol IKATAN Kkal/mol
H – H
H – F
H – Cl
H – Br
H – I
F – F
Cl – Cl
C – Cl
104
135
103
88
71
37
58
79
Br – Br
I – I
C – C
C – H
N – H
N – N
O - O
O - H
46
36
83
99
93
226
119
111