I am conducting an experiment to find the rate constant of the decomposition of hydrogen peroxide, $\ce{H2O2}.$ For this, I was planning on using the integrated rate law:

$$\ln(\text{final concentration}) = -kt + \ln(\text{initial concentration})$$

However, I am not sure how I can measure the change in the concentration of $\ce{H2O2}.$ I would appreciate it if someone can propose a method.

  • 2
    $\begingroup$ Typically you measure the volume of evolved O2. $\endgroup$ – Ivan Neretin Aug 15 '19 at 11:34
  • $\begingroup$ After that, what should I do? $\endgroup$ – A M Aug 15 '19 at 13:32
  • $\begingroup$ Then calculate the concentration of H2O2 from these data. $\endgroup$ – Ivan Neretin Aug 15 '19 at 13:38
  • $\begingroup$ Alternatively, if you want to work with liquid, you could do titrations by sampling the solution over time. titrations.info/permanganate-titration-hydrogen-peroxide $\endgroup$ – The_Vinz Aug 15 '19 at 15:31

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