3.1.6 Chemical equilibria, Le Chatelier's principle and Kc Flashcards
When energy is taken in from the surroundings, this is called an __________ reaction and usually feel cold.
Endothermic reaction
When energy is transferred to the surroundings, this is called an _________ reaction and usually feels hot.
Exothermic
What is a closed system?
A system in which reactants and products can neither be added nor removed.
What is a reversible reaction?
A reaction that can proceed in either direction by changing conditions
Kc= ?/?
Products/reactants
What does Le Chatelier’s principle state?
If a change is applied to a system in equilibrium, the equilibrium will react to oppose the change.
What happens when you increase the concentration when following Le Chatelier’s principle?
The opposite is to decrease (reactant) of reaction. Makes more product by moving to the right to oppose the change.
What happens when you increase the pressure when following Le Chatelier’s principle?
The opposite is to decrease pressure by moving to the side with fewer moles of gas.
What happens when you increase the temperature when following Le Chatelier’s principle?
The opposite is to decrease temperature by increasing the endothermic reaction.
In what type of system can equilibrium be reached?
Closed system
