Rate Equations

Question 1

An experiment is done to investigate the rate of a reaction. During the experiment the concentration of a reactant is measured at one-minute intervals. Explain how graphical methods can be used to process the measured results, to
confirm that the reaction is first order

Answer 1

• Plot concentration (y-axis) against time (x-axis) and take tangents / (calculate the) gradients (to calculate rates)
• Plot rate/gradients against conc
• Straight line through origin / directly proportional confirms first
  order