BRAINCAKEEffect of Change in Concentration
Le Chatelier's principle states that if a system at equilibrium is subjected to a change in conditions, the position of equilibrium shifts in the direction that tends to oppose the change.
For concentration:
• Increasing the concentration of a reactant shifts the equilibrium to the right, using up some of the added reactant and making more product.
• Removing a product shifts the equilibrium to the right, replacing some of the product.
• Increasing the concentration of a product, or removing a reactant, shifts the equilibrium to the left.
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Key terms in this lesson
- equilibrium constant
- A value, Kc, expressing the ratio of product to reactant concentrations at equilibrium for a reaction at a given temperature.
More in Reversible Reactions and Dynamic Equilibrium
- Reversible Reactions
- Dynamic Equilibrium
- Effect of Change in Pressure
- Effect of Change in Temperature
- Effect of Catalysts
- Limitations of Predictions
- Homogeneous and Heterogeneous Equilibria
- The Equilibrium Law
All 18 lessons in Reversible Reactions and Dynamic Equilibrium · All Edexcel AS-level Chemistry topics