| Thermochemistry |
|
|
|
|
|
|
| Heat changes
during chemical reactions |
|||||
| Thermochemical equation.
eg. |
|||||
| H2 (g)
+ O2 (g) ---> 2H2O(l)
DH =-
256 kJ; |
|||||
| DH is called the
enthalpy of reaction. |
|||||
| if DH is + reaction is called endothermic |
|||||
| if DH is - reaction is
called exothermic |
|||||