Predict how an equilibrium shifts when concentration, pressure or temperature changes.
Le Chatelier’s principle says a system at equilibrium shifts to oppose any imposed change. Pressure only matters when the gas mole count differs between sides, and temperature shifts equilibrium in the endothermic direction when raised. Ammonia synthesis illustrates the classic conflict: high pressure and low temperature both favour yield, but low temperature makes the rate impractically slow.
Le Chatelier
Increasing pressure favours the side with fewer gas moles; heating favours the endothermic direction
Increasing pressure favours the side with fewer gas moles; heating favours the endothermic direction Le Chatelier’s principle says a system at equilibrium shifts to oppose any imposed change. Pressure only matters when the gas mole count differs between sides, and temperature shifts equilibrium in the endothermic direction when raised.
Ammonia synthesis illustrates the classic conflict: high pressure and low temperature both favour yield, but low temperature makes the rate impractically slow.
This calculator takes 5 inputs: Moles of gaseous reactants, Moles of gaseous products, Enthalpy change of reaction, Change in pressure, Change in temperature. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.