Collision Theory Flashcards
How does surface area increase the rate of reaction?
There is more of a surface for the colliding particles to work on, meaning that there are more frequent collisions.
How does concentration affect rate of reaction?
If there are more reactant particles suspended in the water there are more frequent collisions so a faster rate of reaction
How does pressure affect rate of reaction?
The particles are more compressed meaning more frequent collisions will occur, meaning a higher rate of reaction.
Why does a higher temperature increase rate of reaction?
Because there is more energy so the particles move more quickly and collide more, meaning the rate of the reaction is increased
What is the activation energy?
The minimum amount of energy needed for particles to react
How does a solid catalyst work?
It gives the particles an area to stick to, increasing the amount of successful collisions
What are the disadvantages of catalysts?
> they are expensive to produce and need to be removed and cleaned
> they are reaction specific so different reactions require different catalysts
> they can be poisoned by impurities
What are the advantages of industrial catalysts?
they decrease production cost as:
> they increase rate of reaction so decrease the time the plant needs to run for
> they decrease the necessary temperature
> they can be reused
