Rate of Reaction

• The rate of reaction is how fast a reaction happens.
• Rate of Reaction = amount of reactant used OR amount of product formed / time
• Testing for rate: Precipitation

  1. Place a flask on top of a black cross
  2. Start a timer, before mixing 2 reactants in the beaker
  3. Keep mixing until the black cross is no longer visible, then stop the timer
  4. Measure the time, before repeating and calculating a mean
• Testing for rate: Change in mass

  1. Measure the mass of a solution during a reaction, as gas is given off

  Do experiment in a fume cupboard to prevent any danger.
• Testing for rate: Volume of Gas given for

  Use a gas syringe to measure the amount of volume of a gas given off during an experiment.

  The more gas given off in a set time interval, the faster the reaction.
• The higher the SA of a reactant, the faster the reaction.
• The higher the temperature, the faster the rate of reaction.
• The higher the pressure, the faster the rate of reaction.
• A catalyst increases the rate of a reaction.
• A catalyst reduces the amount of Activation energy required.
• Enzymes are biological catalysts.
• The volume of a catalyst doesn't change during a reaction.