Rate of Reaction (Chemistry AQA)

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How can you find out the mean rate of reaction
Mean rate of reaction = Quantity of reactant used ÷ Time or Quantity of product formed ÷ Time
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How do you find the rate of reaction from a the gradient
1. Select the time at which you want to measure the rate. 2.With a ruler draw a tangent to the curve at that point 3.Choose two points and label the co-ordinates 4.Find the gradient by divinding the change in the y axis by the change of the x axis
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Factors affecting rate of reaction
Temperature, Concentrarion of reactants, Pressure of gas, Surface area
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What is a catalyst
A catalyst is a substance that speeds up a chemical reaction.
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Give an example of catalysts being used
1.Iron in the production of ammonia 2.Platinum in catalytic convertors
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What is a reversable reaction
The products that have been made from the reactants can be turned back into the reactants
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What happens to the energy in reversable reactions
If a reversible reaction is exothermic in one direction then it will be endothermic in the oher direction. The amount of energy transferred will be the same in each reaction
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Card 2

Front

How do you find the rate of reaction from a the gradient

Back

1. Select the time at which you want to measure the rate. 2.With a ruler draw a tangent to the curve at that point 3.Choose two points and label the co-ordinates 4.Find the gradient by divinding the change in the y axis by the change of the x axis

Card 3

Front

Factors affecting rate of reaction

Back

Preview of the front of card 3

Card 4

Front

What is a catalyst

Back

Preview of the front of card 4

Card 5

Front

Give an example of catalysts being used

Back

Preview of the front of card 5
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