Rates Of Reaction

Question 1

What is the rate of reaction?

Answer 1

The speed at which a reaction happens

Question 2

How do we calculate ROR?

Answer 2

Rate = reactant used or product formed
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Time

Question 3

What happens if time is measured in seconds?

Answer 3

Then unit to the power of -1

Question 4

Metal + acid =

Answer 4

Hydrogen gas

Question 5

Metal carbonate + acid =

Answer 5

Carbon dioxide gas

Question 6

What is the collision theory?

Answer 6

1. As the temperature increases, the reactant particles have more energy
2. More particles will have enough energy to collide
3. Particles move faster
4. Leads to more successful collisions
5. In a given time

Question 7

How does increasing the concentration effect the ROR and why?

Answer 7

Higher the concentration in a solution, faster the ROR.
More reactant particles in higher concentration, therefore they are more likely to collide and result in successful collisions.

Question 8

What is the effect on the ROR when using a catalyst and why?

Answer 8

Catalyst increases ROR without being used up.
Catalyst lower activation energy needed by providing different pathway for reaction. This means reaction particles will have enough energy for a successful collision.
Enzymes are example of catalyst, so is manganese oxide

Question 9

How do we calculate the ROR?

Answer 9

Volume of gas
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Time taken