Rates of reactions Flashcards
1
Q
How to find out the rate of a chemical reaction
A
Monitor the amount of reavtants used up over time or the amount of products made over time
2
Q
what is activation energy
A
Minimum energy required for particles to react
3
Q
What does gradient of line show
A
Rate of reaction at that time
4
Q
What happens to the rate of reaction if the surface area to volume ratio increases
A
It increases
5
Q
2 ways to work out mean rate of reaction
A
- Quantity of reactant used 2. Quantity of product used
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Time taken Time taken
6
Q
Why does increasing temp increase rate of reaction
A
More collisions of particles and with more energy
7
Q
What does increasing the concentration of reactants do and why
A
Increases rate of reaction because more particles moving around so more collisions
8
Q
What are 3 ways to increase rate of reaction
A
- Increasing temperatures
- Increasing concentration or reactants
- Increasing pressure of reacting gases
