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How do catalysts increase the rate of a chemical reaction?

Mar 2, 2016


   How do catalysts increase the rate of a chemical reaction?Scientists found that, at a certain temperature, the greater the percentage of active molecules, the greater the rate of chemical reaction, the chemical reaction will be carried out quickly. On the contrary, the smaller the percentage of activated molecules, the smaller the rate of chemical reaction, the chemical reaction is carried out slowly.

   How do catalysts increase the rate of a chemical reaction?The energy of the active molecule is higher than that of the non activated molecule, and the difference between the average energy of the activated molecule and the average energy of all the molecules is called the activation energy. As a result, we can imagine, at a certain temperature, if the activation energy of a chemical reaction is greater, it means that the percentage of activated molecules is smaller, the result is the rate of the chemical reaction is smaller. Vice versa.

   How do catalysts increase the rate of a chemical reaction?To speed up the chemical reaction rate, it is clear that the percentage of activated molecules must be increased. One of the most commonly used methods is to increase the temperature.As the temperature increases, the average energy of the molecule increases, so that more molecules can cross the "dividing line" and become "active molecules", so the percentage of activated molecules increases.

   How do catalysts increase the rate of a chemical reaction?To increase the percentage of activated molecules, in addition to increase the temperature,is there any other way?In a chemical reaction, the activation energy of the chemical reaction can be reduced effectively by using the catalyst, thereby increasing the percentage of the activation molecule, and the speed of the chemical reaction is significantly accelerated.

   How do catalysts increase the rate of a chemical reaction?So it is not difficult to find, catalyst chemical reaction speed accelerate the fundamental reason is that catalyst can reduce the chemical reaction activation energy, increased activation of molecular percentage, and ultimately increase the rate of a chemical reaction.

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