C12 Rate of Reaction Flashcards
What is rate of reaction?
How quickly reactants are used up
What is the unit for rate of reaction?
grams per second
g/s
What is the activation energy?
Minimum amount of energy colliding particles needed before a reaction to take place
Why does increasing concentration increase rate of reaction?
More reactant particles in the same volume lead to more frequent collisions
Why does increasing pressure increase rate of reaction?
Less space between particles means that there are more frequent collisions
Why does increasing surface area increase the rate of reaction?
More reactant particles are exposed and able to collide leading to more frequent collisions
What is a catalyst?
A substance that increases the rate of reaction but is not used up in the reaction
How do catalysts increase rate of reaction?
Lower activation energy
Why does temperature increase the rate of reaction?
Particles will have more kinetic energy therefore will move faster leading to more frequent collisions
