DATA Page
Standard enthalpy of formation at 298 K: DHf0 (kJ mol-1)
|
H2S(g) |
-21 |
|
SO2(g) |
-297 |
|
H2O(g) |
-242 |
|
H2O(l) |
-285 |
|
CO(g) |
-111 |
|
CO2(g) |
-393 |
|
Ca(OH)2(s) |
-986 |
|
NO(g) |
+90 |
|
NH3(g) |
-46 |
|
C2H6(g) |
-85 |
|
C2H4(g) |
+52 |
|
I2(g) |
+62 |
|
CaO(s) |
-635 |
|
SO3(g) |
-396 |
|
NO2(g) |
+33 |
|
CH4(g) |
-75 |
|
NaOH(s) |
-427 |
|
KCl(s) |
-436 |
|
KClO3(s) |
-391 |
|
HCl(g) |
-92 |
|
N2O(g) |
+82 |
|
PCl5(g) |
-375 |
|
PCl3(g) |
-287 |
|
N2O4(g) |
9.2 |
|
Ni(CO)4(g) |
-602.9 |
|
HI(g) |
+27 |
|
C2H5OH(l) |
-278 |
|
glucose(s) |
-1274 |
Average bond enthalpy at 298 K (kJ mol-1)
|
N-H |
391 |
|
N-N |
163 |
|
C-H |
413 |
|
C-C |
348 |
|
H-H |
436 |
|
O-H |
463 |
|
N=N |
418 |
|
NºN |
945 |
|
C=C |
614 |
|
CºC |
839 |
|
C=O |
745 |
|
O=O |
498 |
Enthalpy of vaporisation DHv (kJ mol-1)
|
CCl4(l) ® CCl4(g) |
33 |
|
Pb(l) ® Pb(g) |
190 |
Miscellanies
|
Electron affinity of F |
-334 kJ mol-1 |
|
1st ionisation energy of K |
+425 kJ mol-1 |
|
Atomisation of Br2 to Br |
+193 kJ mol-1 |
|
Enthalpy of combusiton of n-hexane |
-4163 kJ mol-1 |
Standard Gibbs free energy of formation at 298 K: DGf0 (kJ mol-1)
|
NH3(g) |
-16.5 |
|
HI(g) |
1.7 |
|
I2(g) |
19.4 |
|
Fe2O3(s) |
-745 |
Standard entropy at 298 K: DS0 (J K-1 mol-1)
|
CO(g) |
197.6 |
|
Ni(s) |
29.9 |
|
Ni(CO)4(g) |
410.6 |
|
CO2(g) |
214 |
|
C2H5OH(l) |
161 |
|
glucose(s) |
212 |