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Description
Flashcards by tanya-williams46, updated more than 1 year ago
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Created by tanya-williams46
almost 9 years ago
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| Question | Answer |
| Two equations for the rate of a chemical reaction | 1) Rate= Quantity of reactant used up/time 2) Rate= Quantity of product formed/time |
| 3 experimental ways of measuring the rate of a reaction | 1. Measure the loss in mass of reactants over time using a mass balance 2. Measure the volume of gas produced over time using a gas syringe 3. Measure the time taken for a solution to become opaque |
| jj | ff |
| The collision theory states a chemical reaction can only occur if... | 1. Reacting particles collide 2. Reacting particles collide with sufficient energy |
| 5 factors that affect the rate of a chemical reaction | 1. Temperature 2. Concentration 3. Pressure 4. Surface area 5. Catalyst |
| Increase in temp | Increasing the temperature increases the speed of the reacting particles so they collide more frequently and more energetically. This increases the rate of reaction. |
| Increase in pressure | More particles in a given volume Increases the frequency of collisions so increases the rate of reaction |
| Increase in concentration | More particles in a given volume Increases the frequency of collision so increases the rate of reaction |
| Increase in surface area | Increases the frequency of collisions so increases the rate of reaction |
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