Rate Extent Of Reaction Definitions Flashcards
Heat of reaction (ΔH)
The energy absorbed or released in chemical reaction
Exothermic reactions
Reactions that release energy
Endothermic reactions
Reactions that absorb energy
Activation energy
The minimum energy needed for a reaction to take place
Activated complex
The unstable transition state from reactants to products
Reaction rate
The change in concentration of reactants or produce per unit time
Catalyst
A substance that increases the rate of a chemical reaction without itself undergoing a permanent change
Open and closed systems
A open system continuously interacts with its environment, while a closed system is isolated from its surroundings
A reversible reaction
A reaction is reversible when products can be converted back to reactants
Chemical equilibrium
It is a dynamic equilibrium when the rate of the forward reaction equals the rate of the reverse reaction
Le Chatelier’s Principle
When the equilibrium in a closed system is disturbed, the system will reinstate a new equilibrium by favouring the reaction that will oppose the disturbance
