In the preparation of oxygen by heating KClO\(_3\) in the presence of MnO\(_2\), only moderate heat is needed because the catalyst acts by?
lowering the pressure of the reaction
increasing the surface area of the reactant
increase the rate of the reaction
lowering the energy barrier of the reaction
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Discussions (21)
The answer to this question is wrong. The question demands the mechanism in which catalyst works which is by lowering energy barrier or activation energy. Having been that the question asks the effect of catalyst, then option would have been the right answer. But the question asks for how the catalyst works. Therefore option D is the viable answer.
Catalyst act by lowering the energy barrier thereby increasing the rate of reaction. This means that the most suitable answer for this question is option D, lowering the energy barrier as that is the major work the catalyst performs.
The question is wrong because according to new school chemistry, manganese (iv)oxide acts as a catalyst,the reaction occurs at a lower temperature and acts at a much faster rate
the answer should be "d" cauae when the energy barrier is lowered the temperature needed to overcome that energy barrier will therefore be less
The correct answer should be option D. Catalysts increase rate of reaction by lowering the activation barrier
answer is C ==
moderate heat is needed becouse the catalyst （manganasedioxide mno2） act by increasing the rate of the reaction
a catalyst lowers activation energy and alters the rate of a chemical reaction and not necessarily increasing the rate of a reaction
normally a catalyst increase the rate of a reaction but "here specifically" that doesn't work
