Chemistry in Society - Controlling the Rate Flashcards
1
Q
What is required for a successful chemical reaction to occur?
A
- Correct collision geometry.
- Sufficient energy.
2
Q
How does changing the temperature affect the activation energy?
A
It has no effect.
3
Q
What is activation energy?
A
The minimum energy required for the reaction to take place.
4
Q
Does increasing the temperature shift the temperature curve to the left or right?
A
It shifts to the right.
5
Q
What type of reaction is it if the products have less energy than the reactants?
A
- Exothermic.
- ΔH = negative.
6
Q
What type of reaction is it if the products have more energy than the reactants?
A
- Endothermic.
- ΔH = positive.
7
Q
At which part of the graph is the activated complex?
A
The very top.
8
Q
What does a catalyst do?
A
They speed up a chemical reaction without being used up. They do this by lowering the activation energy.
