.1 Calculating rates of reactions

• The rate of a chemical reaction can be found by measuring the quantity of a reactant used or the quantity of product formed over time: 


  mean rate of reaction  = quantity of reactant used / time taken

  mean rate of reaction  = quantity of products formed / time taken
• The quantity of reactant or product can be measured by the mass in grams or by a volume in cm3
• The units of rate of reaction may be given as g/s or cm3 /s