Controlling Rate Of Reaction Flashcards
1
Q
Why is it important to be able to control rate of reaction
A
If the rate is too low it may not be economically viable
If the rate is too high there is a risk of thermal explosion
2
Q
Name the 6 variables that can affect rate of reaction
A
Concentration Pressure Surface area Temperature Collision geometry Catalyst
3
Q
Is the enthalpy change positive or negative for exothermic reactions
A
Negative
4
Q
Is the reaction positive or negative for endothermic reaction
A
Positive
5
Q
What is an activated complex
A
It is an unstable arrangement of atoms formed at the maximum of the potential energy barrier during a reaction
6
Q
Activation energy
A
The minimum energy for a reaction to occur
7
Q
What is kinetic energy a measure of
A
Temperature
8
Q
Effect of a catalyst
A
Speeds up rate of reaction
Lowers the activation energy
