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The hydrogen peroxide decomposition reaction catalyzed in the presence of black, insoluble MnO2 solids has been investigated in this experiment. Parts 1A and 2A of the experiment are carried out at 25°C and 4°C, respectively. The same method and temperatures has been employed for the B part; only, the amount of KMnO4 added is twice the amount added in A. The calculated activation energy for B part is much lower than that of A part having a value of 24.91 kJ/mol. The calculated Arrhenius constant A, is also lower in B having a value of 34.84s-1. Results have shown that the higher the concentration of the catalyst used, the lower the activation energy, thus, the faster the reaction...
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