Unit 1- Rate of reaction Flashcards
1
Q
State the factors that affect the rate of a reaction.
A
- using a catalyst - changing the temperature - changing the concentration - changing the particle size
2
Q
How to increase the rate of a chemical reaction?
A
- Add a catalyst - Increase the temperature - Increase the concentration - Decrease the particles size or increase the surface area
3
Q
How to decrease the rate of a chemical reaction?
A
- Remove a catalyst if one is present - Decrease the temperature - Decrease the concentration - Increase the particles size or decrease the surface area
4
Q
What is a catalyst?
A
Chemical or substances that increase the speed of a chemical reaction without being used up.
5
Q
A reaction produce 30cm3 of carbon dioxide in 10 seconds, calculate the rate of reaction (include the units)
A
3 cm3 s-1
6
Q
In a reaction, the mass lost in 4min20seconds was 12 g.
What is the average rate of reaction, in g s−1, over this time?
A
0.05 g s-1
7
Q
In an experiment, the volume of gas collected in 5 minutes was 50cm3. If the rate of reaction equal 10, what is the unit for the average rate of this reaction?
A
cm3/min or in scientific notation: cm3 min-1
8
Q
A
9
Q
A
10
Q
A
