Rates of reaction slideshare

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How the concentration of acid affects the rate of reaction with marble chips

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Rates of reaction slideshare

  1. 1. Factors affecting the rate of reaction<br />Rates of Reaction<br />John West Rutherford College<br />
  2. 2. Collision theory<br />Before particles can react they must collide<br />Particles in a gas or liquid are in constant motion. Chemists deal with atoms molecules and ions.<br />Chemical reactions happen when particles collide. Not all collisions are effective. <br />Particles might not collide with enough energy. <br />They might not collide at the right angle<br />Solids<br />Solid substances don’t usually react with each other because their particles are locked together. <br />Only those particles on the surface of the solid are available for collision<br />John West Rutherford College<br />
  3. 3. What do we mean by the rate of a chemical reaction?<br />The rate of a chemical reaction is how fast reactants are converted into products.<br />We can design experiments to measure how fast reactions occur<br />The rate of a reaction can be speeded up or slowed down depending on the reaction conditions.<br />Increasing the number of collisions and increasing their effectiveness will speed up the rate of a chemical reaction<br />John West Rutherford College<br />
  4. 4. Marble chips and 2.0 molL-1 hydrochloric acid<br />John West Rutherford College<br />
  5. 5. Marble chips and 2.0 molL-1 hydrochloric acid<br />John West Rutherford College<br />
  6. 6. Comparing the rate of reaction with two different concentrations<br />John West Rutherford College<br />
  7. 7. Graphing results<br />John West Rutherford College<br />

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