Plotting Reaction Rates

• What can be plotted to show the progress of a chemical reaction?

  Graphs
• What does a steeper line on a reaction rate graph indicate?


  The reaction is faster
• What happens in the reaction graph when one of the reactants is used up?

  The reaction stops and the line becomes horizontal
• What is true about the amount of product formed from reactants?


  The same amount of product is formed from the same amount of reactants, regardless of rate
• How can you determine the rate of reaction at a particular time from a graph?


  By drawing a tangent to the curve at that time and finding the gradient
• What does the gradient of the tangent represent on a reaction rate graph?


  The rate of reaction at that time
• What are the three key things to remember when plotting reaction rates?


  • The steeper the line, the faster the reaction.
  • When one of the reactants is used up, the reaction stops (the line becomes horizontal).
  • The same amount of product is formed from the same amount of reactants, regardless of rate.
• What is the first step to find the rate of reaction from a graph?


  Draw a tangent to the curve at that time
• What is the second step to find the rate of reaction from a graph?

  Find the gradient of the tangent
• Why is it important to find the gradient of the tangent on a reaction rate graph?


  It gives the rate of reaction at that specific time