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Why are Manganese (IV) Oxide and Iron (III) Oxide better catalysts than CuO for the decomposition of hydrogen peroxide?

Question asked by danie laminta on Apr 19, 2019

- the concentration of H2O2 is 20V or 6% concentration

- each of the catalyst added were 0.02 moles.

(1.74g of manganese(IV) oxide)

(3.19g of Iron(III) oxide)

( 1.59g of copper (II) oxide)

- temperature is kept at room temp. (23ºc)

- if you could provide the activation energy for each of the different catalyst that would be great!