CP3 Investigating the Rate of Reaction

• What is the definition of reaction rate?

  Measure of how quickly reactants convert into products
• The rate of disappearance of reactants measures the amount of products formed per unit time

  False
• How does a catalyst affect reaction rate?

  Lowers activation energy
• The rate of appearance of products measures the amount of products formed per unit time
• Match the components of an experimental setup with their function.

  Reaction Vessel ↔️ Container where the reaction occurs

  Thermometer ↔️ Measures temperature

  Stirrer ↔️ Ensures uniform mixing
• What is the role of a catalyst in a chemical reaction?

  Lowers activation energy
• What does a thermometer measure in a reaction rate experiment?

  Temperature
• Controls in a reaction rate experiment are crucial to isolate the effect of the variable being tested
• Graphs of concentration vs. time are created to visualize the reaction rate
• The initial reaction rate is determined from the slope of the tangent to the curve at t = 0.

  True
• What does the slope of the tangent at t = 0 indicate in a concentration vs. time graph?

  Initial reaction rate
• Using a water bath ensures accurate and precise temperature control
• The common units used for reaction rate are mol dm⁻³ s⁻¹
• Rank the following factors by their effect on reaction rate, from most to least significant.

  1️⃣ Temperature

  2️⃣ Catalyst

  3️⃣ Concentration

  4️⃣ Surface Area
• Effective collisions between reactant particles are the key driver of reaction rate


  True
• What happens to reaction rate when temperature increases?

  Increases
• Controls are necessary in experiments to isolate the effect of the variable being tested


  True
• The frequency and effectiveness of collisions between reactant particles are key drivers of reaction rate.

  True
• A stirrer in a reaction rate experiment ensures uniform mixing of reactants.


  True
• What is regularly measured during data collection in reaction rate experiments?

  Reactant concentration
• What is the formula for calculating the average reaction rate?

  $Average Rate =$$\frac{\Delta Concentration}{\Delta Time}$
• Comparing rate values under different conditions helps understand how factors such as temperature or concentration affect the reaction
• Inaccurate temperature measurement is a potential source of error in reaction rate experiments.

  True
• What is the purpose of effective stirring or agitation in reaction rate experiments?

  Ensure thorough mixing