rates of reaction end of topic Flashcards
1
Q
What is a catalyst
A
they change the rate of a chemical reaction
2
Q
how does a catalyst increase the ROR
A
It provides a different pathway that has a lower activation energy
3
Q
what is the key thing that increases the ROR
A
the frequency of collisions
4
Q
what increases the frequency of collisions
A
Increasing temp, gives more energy. Increasing concentration of solution, pressure of reacting gasses.
5
Q
What is the collision theory
A
Explains how various factors affect rates of reaction.
6
Q
According to the collision theory, chemical reactions can only occur when
A
when reacting particles collide
7
Q
how do you calculate mean rate of reaction
A
quantity of reactant used / time taken
8
Q
what is the name given to the minimum amount of energy
A
activation energy
