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Assalamualaikum warahmatullahi wabarakatuh. How are you, friends of Rumah Belajar? Meet again with Md. Nawang in the chemistry class. This time, I will discuss about reaction speed. What factors affect reaction speed? Remember, chemistry is easy, fun, and fun. Let's watch the next video.
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reaction rate and factors that affect it. The basic competencies that will be achieved are to explain the factors that affect the reaction rate using the theory of expansion. The indicator that will be achieved is to explain the relationship of the expansion theory with factors that affect the reaction rate.
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The speed of reaction is the change in the concentration of the reaction or the reaction result per unit time. To achieve a reaction, activation energy is needed. Minimum energy that must be owned by the reaction particle so that it produces an effective growth. That we call activation energy or activation energy.
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The following diagram explains about activation energy. The reaction will reach the product if it exceeds the activation energy. We learn the theory of accumulation. Notice the red particles and yellow particles that react in Erlenmeyer. Here there is an accumulation of yellow and red particles.
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The more particles there are, the faster the reaction speed. Notice the following image, there are particles between red and yellow particles. But not all particles can produce products. Notice the particles that occur between A and B.
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The A plant will not produce a product while the B plant produces a product. Next, factors that affect the speed of reaction. There are four, namely the surface area of the touch, temperature, concentration, and catalyst.
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The first is the surface area of the touch. The surface area of the touch means the surface area of the particle that reacts. The larger the density of the substance, the smaller the surface area of the touch. On the contrary, the smaller the density of the substance, the larger the surface area of the touch. Pay attention to the following illustration.
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The A cube is a total of 6 cm3 After divided by 2, the total surface area of the touch becomes 8 cm3 The surface area that has been divided by 2 becomes larger Next is temperature The increase in temperature speeds up the reaction rate because the increase in temperature causes the movement of particles to be faster
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This movement causes the kinetic energy of the particles to increase, so that there is more and more possibility of effective formation.
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concentration at high concentration a reaction is faster than low concentration because at high concentration the number of particles is more so that more particles are formed than low concentration where the particles are less, the possibility of forming smaller
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The last one is the catalyst. The catalyst is an element that accelerates the rate of reaction but does not react. One example of a catalyst is often called a catalytic converter. The way the catalyst works is by making a new reaction mechanism with lower activation energy. Because the activation energy is lower,
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then there are more and more reactions that can exceed the activation energy. As a result, the reaction rate will be faster. How did you learn? Have you understood the factors that affect the reaction rate? Yes, there are four factors that affect the reaction rate. First, the area of openness of the touch, concentration, temperature, and finally, the catharsis. Easy, isn't it?
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Alright, see you in the next video. Assalamualaikum warahmatullahi wabarakatuh.
