Rates of Reaction
- Created by: Rebeccaellis17
- Created on: 03-04-15 19:18
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- Amount of product formed Divided by Time
- Rates of Reaction
- Increased by: Temperature Concentration Pressure Surface Area Catalyst
- Concentration (Liquids): More particles of reactant so more likely to react
- Surface Area: More surface to react with so there would be more frequent collisions
- Pressure (Gases): Less space so more likely to have successful collisions
- Tempertature: Particles have more energy to reach activation level so move more and therefore collide more
- Catalyst: Will lower the activation energy so more particles will have minimum energy to successfully collide
- They have a large surface area to be effective as possible
- They can be expensive but do not need replacing very often
- Can be reused as do not get used up in the reaction
- It can reduce the energy and time needed for reactions so reduces cost and environmental impact (Resources and pollution)
- Can be reused as do not get used up in the reaction
- Some catalysts metals are toxic and could be harmful if get into the enviroment
- The particles must collide with enough energy to react. This is called the ACTIVATION ENERGY
- The likelihood of reactions occurring depends on: The number of successful collision and The number of particles with activation energy
- Successful collision is the difference between bumping and reacting
- So to increase the rate of reaction we must either: Increase the likelihood of successful collision or Increase the number of particles with activation energy
- Successful collision is the difference between bumping and reacting
- The likelihood of reactions occurring depends on: The number of successful collision and The number of particles with activation energy
- Increased by: Temperature Concentration Pressure Surface Area Catalyst
- Rates of Reaction
- Much research- Nanoparticles or enzymes as catalysts
- Enzymes are biological catalysts that work at room temperature so could reduce energy usage further
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