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SN2 Reaction - (Concept)
The general reaction occurs as follows:
Mechanism
- It is bimolecular nucleophilic substitution (SN2) reaction.
- Rate of reaction follows second order kinetics and depends upon the concentration of both the nucleophile as well as the substrate.
- Rate determinig step depends on how fast the transition state is formed and also the stability of the transition state
- Stronger nucleophile is required as it has to attack and make the leaving group leave
- Polar aprotic solvents favour SN2 reaction as they do not facilitate formation of ions
- The reaction occurs in concerted mechanism and inversion of configuration (Walden Inversion) takes place if the leaving group and the nucleophile have the same priority
- Steric hinderance in the substrate decreases the reactivity of the subtrate towards SN2 reaction
| Exam | Chapter |
| JEE MAIN | Organic Compounds containing Halogens |
The major product of the following reaction is :
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| B. |
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| C. |
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| D. |
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Consider the reaction given below:
The reaction proceeds by the mechanism
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| D. |
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Which of the following reactions will not produce a racemic product ?
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In reaction, the correct order of reactivity for the following compounds:
is:
| A. |
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| B. |
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| C. |
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| D. |
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Which of the following compounds will show retention in configuration on nucleophilic substitution by ion?
| A. |
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| B. |
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In the following reaction sequence, structure A and B, respectively will be:
| A. |
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The major products A and B for the following reactions are respectively :
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The major product of the following reaction is :
| A. |
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| D. |
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The correct order of reactivity of the given chlorides with acetate in acetic acid is :
| A. |
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| B. |
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| C. |
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| D. |
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The order of reactivity of the given haloalkanes towards nucleophile is:
| A. |
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| D. |
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In a face-centered cubic lattice atoms A are at the corner points and atoms B at the face-centered points. If atom B is missing from one of the face-centered points, the formula of the ionic compound is :
| A. |
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| B. |
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| D. |
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Tertiary alkyl halides are practically inert to substitution by mechanism because of
| A. |
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| B. |
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| D. |
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The organic chloro compound, which shows complete stereochemical inversion during a reaction, is
| A. |
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| B. |
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| D. |
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For the above reaction,
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| B. |
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| C. |
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| D. |
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The product of the above reaction is
| A. |
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| B. |
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| C. |
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| D. |
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The reaction between CH3Cl and hydroxide ion to yield methanol and chloride ion follows a second order kinetics, i.e., the rate depends upon the concentration of both the reactants.
