A change in concentration, pressure, or volume may alter the equilibrium position, but it does not change the value of the equilibrium constant. Only a change in temperature can alter the equilibrium constant.
The formation of NO2 from N2O4 is an endothermic process:
|
N2O4 (g) ® 2NO2 (g) |
DH° = 58.0 kJ |
and the reverse reaction is exothermic:
|
2NO2 (g) ® N2O4 (g) |
DH° = -58.0 kJ |
Le Chatelier / Le Chatelier's Principle
Changes in concentration / Changes in volume & pressure / Summary