Answer
414.6k+ views
Hint: ${{S}_{N}}^{1}$ Reactions are unimolecular reactions, they have a stepwise mechanism whereas ${{S}_{N}}^{2}\text{ }$reaction is a bimolecular reaction, and it is a single-step reaction.
Complete step by step solution:
${{S}_{N}}^{1}\text{ and }{{S}_{N}}^{2}\text{ }$ Reaction both are nucleophilic substitution reaction, it involves the attack of a positively charged or a partially positively charged atom or group by a nucleophile. Nucleophiles are the species which are rich in electrons; they can donate an electron pair.
${{S}_{N}}^{1}\text{ }$ Reaction follows the first-order kinetics and it is a two-step reaction. The rate of the reaction depends upon the concentration of the substrate. A carbocation is formed as an intermediate in the ${{S}_{N}}^{1}$ reaction after the removal of the leaving group. ${{S}_{N}}^{1}$ Reaction gives the mixture of the product with the retention and inversion in the configuration. This leads to racemization.
Mechanism of ${{S}_{N}}^{1}$ reaction is shown below:
$\text{ }{{S}_{N}}^{2}\text{ }$ Reaction follows the second-order kinetics and it is a single step reaction. The rate of the reaction depends upon the concentration of the substrate and nucleophile. There is a formation of a single transition state in ${{S}_{N}}^{2}\text{ }$ reaction.
${{S}_{N}}^{2}\text{ }$ Reaction leads to a back-side attack, which leads to the inversion of the stereochemistry of the carbon atom, here a complete inversion of the configuration takes place.
Mechanism of $\text{ }{{S}_{N}}^{2}\text{ }$ reaction is mentioned below:
Note: For both ${{S}_{N}}^{1}\text{ and }{{S}_{N}}^{2}\text{ }$ reaction higher will be temperature more elimination product we get. The more elimination products we get, the substitution product will be less because the amount of the reactant is limited. This is because the activation energy for a particular reaction is higher for the elimination reaction than the substitution reaction for the same reaction.
Complete step by step solution:
${{S}_{N}}^{1}\text{ and }{{S}_{N}}^{2}\text{ }$ Reaction both are nucleophilic substitution reaction, it involves the attack of a positively charged or a partially positively charged atom or group by a nucleophile. Nucleophiles are the species which are rich in electrons; they can donate an electron pair.
${{S}_{N}}^{1}\text{ }$ Reaction follows the first-order kinetics and it is a two-step reaction. The rate of the reaction depends upon the concentration of the substrate. A carbocation is formed as an intermediate in the ${{S}_{N}}^{1}$ reaction after the removal of the leaving group. ${{S}_{N}}^{1}$ Reaction gives the mixture of the product with the retention and inversion in the configuration. This leads to racemization.
Mechanism of ${{S}_{N}}^{1}$ reaction is shown below:
![seo images](https://www.vedantu.com/question-sets/9d74a26f-371a-408e-8f1d-4d248c6a63287848120785507959456.png)
$\text{ }{{S}_{N}}^{2}\text{ }$ Reaction follows the second-order kinetics and it is a single step reaction. The rate of the reaction depends upon the concentration of the substrate and nucleophile. There is a formation of a single transition state in ${{S}_{N}}^{2}\text{ }$ reaction.
${{S}_{N}}^{2}\text{ }$ Reaction leads to a back-side attack, which leads to the inversion of the stereochemistry of the carbon atom, here a complete inversion of the configuration takes place.
Mechanism of $\text{ }{{S}_{N}}^{2}\text{ }$ reaction is mentioned below:
![seo images](https://www.vedantu.com/question-sets/970f0b24-c787-4d0e-9955-08f92d1477f7401501192406152331.png)
Note: For both ${{S}_{N}}^{1}\text{ and }{{S}_{N}}^{2}\text{ }$ reaction higher will be temperature more elimination product we get. The more elimination products we get, the substitution product will be less because the amount of the reactant is limited. This is because the activation energy for a particular reaction is higher for the elimination reaction than the substitution reaction for the same reaction.
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)