Measuring rates of reaction

• Rate of reaction = Amount of reactant used or product formed ÷ time
• Precipitation and colour change

  • you can record the visual change in a reaction if the initial solution is transparent and the product is a precipitate which clouds the solution
  • If the reactants are colourness, you can time how long it takes for it to change colour
• change in mass

  • It a reaction produces gas it can be weighed to see its speed
  • the faster it gets lighter, the quicker the reaction
• The volume of gas given Off:

  • you use a gas syringe to measure how quick the gas is given Off
• . on a graph:

  Rate of reaction = change in y ÷ change in x