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In the preparation of oxygen by heating KClO3 in the presence of MnO2, only moderate ...

In the preparation of oxygen by heating KClO3 in the presence of MnO2, only moderate heat is needed because the catalyst acts by

A. lowering the pressure of the reaction
B. increasing the surface area of the reactant
C. increase the rate of the reaction
D. lowering the energy barrier of the reaction




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