New Chem Flashcards
(17 cards)
Collision Theory states
React, they have to collide with sufficient energy
What is activation energy?
The minimum amount of energy required for reaction to take place
When considering how a condition will affect the rate of reaction, you should consider
Frequency of collisions
Energy of particles
What is equilibrium
When the rate of the forward reaction is equal to the rate of backward reaction
What is dynamic equilibrium
Both reactions are happening but no overall affect because they are the same rate
So no overall change in the concentration of reactants or products
Condition required for a reaction to reach equilibrium
Closed system
Position of equilibrium lies on..right meaning
the concentration is products is greater than concentration of reactants
3 factors that alter the position of equilibrium
Temperature
Pressure
Concentration of reactants and products
Why do particles need activation energy
Need energy to break the bonds of the reactants so the reaction can begin
What is le chateliers principle
If you change the condition of a reversible reaction at equilibrium
The system will try to counter that change in order to restore the equilibrium
Why is the principle useful
It allows you to predict the affect of any changes made to a system
Decrease in temp
Shift toward the exothermic direction
Increase the pressure
Shift to the side with fewer molecules of gas
Increased concentration
Shift to the right to reduce the reactant concentrations
