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Question 3Status: Not yet answered Points possible:How does catalyst impact the rate of chemical reaction?Select one:It lowers the activation energy of reaction_ It...

Question

Question 3Status: Not yet answered Points possible:How does catalyst impact the rate of chemical reaction?Select one:It lowers the activation energy of reaction_ It raises the temperature of reaclion;It increases the frequency of collisions between molecules: It lowers the rate constant of reaction:

Question 3 Status: Not yet answered Points possible: How does catalyst impact the rate of chemical reaction? Select one: It lowers the activation energy of reaction_ It raises the temperature of reaclion; It increases the frequency of collisions between molecules: It lowers the rate constant of reaction:



Answers

Which of the following explains the increase of the reaction rate by catalyst: (a) Catalyst decreases the rate of backward reaction so that the rate of forward reaction increases (b) Catalyst provides extra energy to reacting molecules so that they may reduce effective collisions (c) Catalyst provides an alternative path of lower activation energy to the reactants (d) Catalyst increases the number of collisions between the reacting molecules.

Problem. 11 Surface Chemistry. The question is which of the following factors are responsible for the increase in the rate of surface catalyze the reaction. So let us first understand about the catalyst. So these substances which as rate the rate of a chemical reaction and themselves remain chemically and quantitatively unchanged after the reaction. That is known as the catalyst. Right? For example, uh in this reaction and nitrogen plus hydrogen combined to form ammonia. Right? And this is the balanced equation. So now in this situation, hi erin and molybdenum is used. Right? So, uh in the process of the manufacturer of ammonia molybdenum act as a promoter of Iran, which is used as a catalyst. Right? So therefore the catalysts are the substances which isolate the rate of chemical action and themselves remain chemically and quantitatively unchanged after the reaction. That is known as the catalyst. We can define the catalyst into two parts, uh that is the homogeneous analysis and high pro genius Canal Asus. Right, okay. So based on that, Mhm. We can say that the yeah, Correent answer for 119. His opportunity is given in the option the bait

After this chapter, we should know at catalysts work by providing an alternative reaction. Route 40 reaction to occur. And these alternative paths have a lower activation energy, so the reactions would occur faster. If we draw the energy diagram of a reaction with or without catalyst, we would see something like this. So the X axis is the progress of reaction, and the Y axis is the energy. And for a reaction, let's say this is in Exeter Mobley action, and the 1st 1 is the reactant. On the second. Today is the product, and essentially this is the activation. Energy required 40 initial reaction without the catalyst and with the catalyst, it would provide an alternative path that have a lower its activation energy. And this is essentially how catalyst work and make the reaction rate faster.

In Problem 43 of Chapter Two chemical kinetics and equilibrium. So in discussion, the rate of a reaction depends on what factor. So the rate of reaction depends on the temperature of the reaction catalyst and concentration of the reactant. So let us discuss one by one how? The rate of reaction depends on these factors. So first days temperature of the reaction. So the rate of reaction increases with increase in temperature. So in most of the cases the rate of reaction becomes nearly double for 10 degree rise of temperature. While in some cases reaction do not take place at room temperature, but take this at higher temperature. So hence the rate of reaction increases with increasing temperature. Now let us discuss the second factor, which is a catalyst. So a catalyst generally increased the spirit of our reaction without itself being consumed. The reaction, in case of river civil reactions, a catalyst helps to attain the equilibrium to play without disturbing the state of equilibrium. So now discuss the third factor, which is the concentration of the reactant so created the concentration of the reactant faster is the reaction, conversely, as the concentration of directed degrees, the rate of reaction, also degrees. So let me from all these factors. The rate of reaction depends on all these factors, so hence we can see that option B. All of these are correct.

As we know that a calculation, a catalyst equally affects equally effect both the forward and backward, both the or world and backward, both forward and backward reactions reactions so it does not affect to eat does not affect equilibrium constant. The club idiom on stand of the reaction. According to the option. Obstinacy does not affect the equilibrium constant of the reaction. It's correct answer.


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