Answer
405k+ views
Hint: Potential energy of a reaction is the amount of energy required by a reaction to bring a chemical change. Several factors affect the rate of a reaction. Addition of catalyst affects the rate of a reaction.
Complete step by step answer:
The kinetics of chemical reaction is dependent on the spontaneity of a reaction. According to thermodynamics, the Gibbs free energy of a reaction must be negative for a reaction to take place smoothly.
The Gibbs free energy is denoted as $\Delta G$. The value of \[\Delta G < 0\], leads to a spontaneous reaction. The factors which lower the value of $\Delta G$, have a significant effect on the spontaneity of a reaction.
The activation energy is defined as the minimum amount of energy required to overcome the activation barrier and transform the reactants into products. It is dented as \[Ea\] and has units of \[KJ/mol\] .
A catalyst is a substance which helps in the reaction to proceed faster. The catalyst does not react with the starting material or the reactants to produce the product. It is not used in a stoichiometric amount in a reaction. It is not consumed in the process.
A catalyst only provides an alternate pathway for a reaction. A catalyst speeds up a reaction by reducing the activation energy required for the chemical reaction or changing the reaction mechanism.
Let us consider the transformation of A to B which requires the activation energy of \[Ea\] . The plot or graph of potential energy v/s reaction coordinate showing the effect of a catalyst on activation energy is shown in figure \[1\] .
Figure\[1\] : The effect of a catalyst on activation energy.
Note: Enzymes are proteins which serve as catalysts for biochemical reactions inside the body. Several catalysts are used in laboratories to carry out chemical transformations. These include both homogeneous and heterogeneous catalysts. The coupling reactions use palladium and copper catalysts (homogeneous catalyst) for giving excellent yields. Hydrogenation using \[10\% \] \[Pd\] on carbon is a heterogeneous catalyst.
Complete step by step answer:
The kinetics of chemical reaction is dependent on the spontaneity of a reaction. According to thermodynamics, the Gibbs free energy of a reaction must be negative for a reaction to take place smoothly.
The Gibbs free energy is denoted as $\Delta G$. The value of \[\Delta G < 0\], leads to a spontaneous reaction. The factors which lower the value of $\Delta G$, have a significant effect on the spontaneity of a reaction.
The activation energy is defined as the minimum amount of energy required to overcome the activation barrier and transform the reactants into products. It is dented as \[Ea\] and has units of \[KJ/mol\] .
A catalyst is a substance which helps in the reaction to proceed faster. The catalyst does not react with the starting material or the reactants to produce the product. It is not used in a stoichiometric amount in a reaction. It is not consumed in the process.
A catalyst only provides an alternate pathway for a reaction. A catalyst speeds up a reaction by reducing the activation energy required for the chemical reaction or changing the reaction mechanism.
Let us consider the transformation of A to B which requires the activation energy of \[Ea\] . The plot or graph of potential energy v/s reaction coordinate showing the effect of a catalyst on activation energy is shown in figure \[1\] .
![seo images](https://www.vedantu.com/question-sets/de9999c2-4707-453c-ab15-c85f6751e8911623379400689145215.png)
Figure\[1\] : The effect of a catalyst on activation energy.
Note: Enzymes are proteins which serve as catalysts for biochemical reactions inside the body. Several catalysts are used in laboratories to carry out chemical transformations. These include both homogeneous and heterogeneous catalysts. The coupling reactions use palladium and copper catalysts (homogeneous catalyst) for giving excellent yields. Hydrogenation using \[10\% \] \[Pd\] on carbon is a heterogeneous catalyst.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
At which age domestication of animals started A Neolithic class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)