Collision theory Flashcards
Why should industrial chemists control the rate of reaction?
So they’re not too slow making it economical or they’re not too fast as it will cause a thermic explosion
How must reactant particles collide in order to react?
They must have sufficient energy
They must have the correct geometry
How does concentration affect the rate of reaction?
As concentration increases the particles are in the same volume of space leading to more successful collisions.
How does particle size affect the rate of reaction?
As particle size decrease, surface area increases this gives the particles a larger area for successful collisions.
How does pressure affect the rate of reaction?
As pressure increases the volume decreases so the particles have less space to leading to more successful collisions.
How does temperature affect the rate of reaction?
Temperature is a measure of kinetic energy the particles have. If this is increased there are more particles with the activation energy. This results in more successful collisions increasing the rate.
Define activation energy.
the minimum kinetic energy required by colliding particles before a reaction will occur.
How do you calculate rate?
Rate=1/time
When does the activated complex form?
At the activation energy, when particles collide, an activated complex forms
Define activated complex.
an unstable arrangement of atoms formed at the maximum of the potential energy barrier, doing a reaction.
