Equilibrium Flashcards
What is (dynamic) equilibrium?
When the amount of reactants and products produced is constant
In equilibrium, if the forward reaction is endothermic, what will the reverse reaction be?
Exothermic
What 3 factors change equilibrium?
- Concentration of a substance
- Temperature of reaction vessel
- Pressure inside vessel
What does Le Chatelier’s principle teach?
Position of equilibrium shifts to oppose external changes.
->
Conditions of reaction changed -> closed system will counteract the change by favouring either the forward or reverse reaction
In equilibrium, what will happen if you decrease the concentration of a product?
Equilibrium favours forward reaction (less reactant made, more product)
In equilibrium, what will happen if you increase the concentration of a product?
Equilibrium reverse reaction (more reactant made, less product)
In equilibrium, what will happen if you increase the concentration of a reactant?
Equilibrium favours forward reaction
In equilibrium, what will happen if you decrease the concentration of a reactant?
Equilibrium favours forward reaction (more reactant, less product)
In equilibrium, what will happen if you increase the temperature of the surroundings?
Equilibrium favours endothermic reaction (surrounding temperature decreases)
In equilibrium, what will happen if you decrease the temperature of the surroundings?
Equilibrium favours exothermic reaction (surrounding temperature increases)
In equilibrium, what will happen if you increase the pressure?
Equilibrium favours reaction that results in less molecules (less molecules = lower pressure)
In equilibrium, what will happen if you decrease the pressure?
Equilibrium favours reaction that results in more molecules (more molecules = higher pressure)
What is a reversible reaction?
A reaction where product molecules can react with each other/decompose to form reactant molecules again.
