The decomposition of hydrogen peroxide

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  • TSUKADA MASAO
    Department of Chemistry, Juntendo University School of Medicine
  • SEO AKIHIKO
    Undergraduate course, Juntendo University School of Medicine
  • YOKOKURA TOMOAKI
    Undergraduate course, Juntendo University School of Medicine

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Other Title
  • 過酸化水素の分解反応
  • --On measurements of the rate of reaction--
  • --反応速度の測定方法について--

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Objective : The differences in the experimental methods and the correlations of the results were examined for the decomposition reaction of hydrogen peroxide. A suitable method for practice for students was investigated. Methods : The rate of the reaction was measured using three different methods, the volume measurement, the pressure measurement and the mass measurement. Results : Controlling the temperature was more difficult in the mass measurement than in the other methods. It was proved that room temperature was appropriate for the catalyst. Both the volume measurement and the pressure measurement resulted in data employed to determine the rate constants. The errors were increased with the progress of the reaction in the mass measurement. Almost the same values of activation energy were obtained using all of the methods. Conclusions : The volume measurement method and the pressure measurement method obtained higher reliability than the mass measurement method. It is advisable to give different methods to different groups and compare the results in practice for students.

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