Using Tangents to Determine Rate

• What should you be able to do by the end of the video regarding tangents on a rate of reaction graph?

  Draw tangents on the curve of the rate of reaction graph.
• Why is it difficult to determine the rate of reaction at a specific point on the curve?

  Because the slope of the curve is constantly changing.
• What is the purpose of drawing a tangent on the curve of a rate of reaction graph?

  • To measure the rate of reaction at a specific point
  • The slope of the tangent indicates the rate of reaction
• How does the slope of the tangent relate to the speed of the reaction at different points?

  A steeper slope indicates a faster reaction, while a less steep slope indicates a slower reaction.
• How can you calculate the rate of reaction using a tangent on the graph?

  • Draw a tangent at the point of interest
  • Construct a triangle using the tangent
  • Measure the vertical (Y) and horizontal (X) sides of the triangle
  • Calculate the rate of reaction by dividing Y by X
• What values are used to calculate the rate of reaction from the tangent?

  Values of the vertical and horizontal sides of the triangle formed by the tangent.
• If the vertical side of the triangle measures 14 grams and the horizontal side measures 25 seconds, what is the rate of reaction?

  0.56 grams per second.
• What does the slope of the tangent represent in the context of a rate of reaction graph?

  • It represents the rate of reaction at a specific point
  • A steeper slope indicates a faster reaction
  • A less steep slope indicates a slower reaction