Unit 1- Rate of reaction Flashcards Preview

Nat 5 chemistry - A.Clarke > Unit 1- Rate of reaction > Flashcards

Flashcards in Unit 1- Rate of reaction Deck (10)
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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