3b)i) - Collision Theory Flashcards
How must reaction rates be controlled
Reaction rates must be controlled in industrial processes. If the rate is too low then the process will not be economically viable. If it is too high there will be a risk of explosion
What does collision theory state
Collision theory states that before a reaction can take place, the particles must collide with each other
What happens by decreasing particle size
By decreasing the particle size of a reactant, we are increasing its surface area
What does a smaller particle size of reactants provide
A smaller particle size of reactants provides a greater surface that collisions can take place on
The greater the surface..
The greater the surface area the faster the reaction rate
What is the effect of increasing temperature
Increasing the temperature, gives the particles more energy, so more particles have the required activation energy
Increasing the temperature..
Increasing the temperature increases the reaction rate because the particles collide more often.
What happens if the concentration of reactants is increased
If the concentration of reactants is increased, there are more reactant particles moving together
What is the effect of increasing concentration on reaction rate
There will be more collisions and so the reaction rate is increased
The higher the concentration of reactants…
The higher the concentration of reactants, the faster the reaction rate will be
What happens if the pressure of gaseous reactants is increased
If the pressure of gaseous reactants is increased there are more reactant particles for a given volume
What is the effect of pressure of number of collision
There will be more collisions and so the reaction rate is increased
The higher the pressure..
The higher the pressure of reactants, the faster the rate of a reaction will be
