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One or More than One Options Correct Type
Direction (Q. Nos. 9-14) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.
Q.
In a SN2 reaction rate of reaction depends on
- a)concentration of substrate
- b)concentration of nucleophile
- c)nature of leaving group
- d)number of lone pairs on donor atom
Correct answer is option 'A,B,C'. Can you explain this answer?
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One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This...
In a SN2 reaction, Rate = k[substrate] [nucleophile]
Hence, rate depends both on concentration of substrate as well as nucleophile. Rate of reaction also depends on nature of leaving group. A better leaving group gives lower activation energy hence, greater rate of reaction. Number of lone pair has no role to play in nucieophilicity hence reactivity.
Hence, rate depends both on concentration of substrate as well as nucleophile. Rate of reaction also depends on nature of leaving group. A better leaving group gives lower activation energy hence, greater rate of reaction. Number of lone pair has no role to play in nucieophilicity hence reactivity.
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One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This...
Rate of SN2 Reaction
The rate of an SN2 (substitution nucleophilic bimolecular) reaction is influenced by several factors. The correct options are A, B, and C, which indicate that the rate of reaction depends on the concentration of the substrate, concentration of the nucleophile, and nature of the leaving group.
Factors Affecting the Rate of SN2 Reaction
1. Concentration of Substrate (Option A)
- The rate of an SN2 reaction is directly proportional to the concentration of the substrate.
- This is because the substrate molecule must collide with the nucleophile in order for the reaction to occur.
- A higher concentration of substrate means a higher collision frequency and therefore a higher reaction rate.
2. Concentration of Nucleophile (Option B)
- The rate of an SN2 reaction is also directly proportional to the concentration of the nucleophile.
- A higher concentration of nucleophile increases the chances of a successful collision with the substrate, leading to a higher reaction rate.
3. Nature of Leaving Group (Option C)
- The nature of the leaving group on the substrate also affects the rate of an SN2 reaction.
- A good leaving group is one that can easily accept an electron pair and leave the molecule.
- Halides, such as chlorine and bromine, are commonly used leaving groups in SN2 reactions because they are stable and can readily accept an electron pair to leave the molecule.
4. Number of Lone Pairs on Donor Atom (Option D)
- Option D states that the rate of reaction depends on the number of lone pairs on the donor atom.
- However, this statement is incorrect as the rate of an SN2 reaction is not influenced by the number of lone pairs on the donor atom.
- The reaction primarily occurs through a backside attack, where the nucleophile displaces the leaving group by approaching from the opposite side of the bond.
- The number of lone pairs on the donor atom does not affect this process.
Therefore, the correct options for this question are A, B, and C, as the rate of an SN2 reaction depends on the concentration of the substrate, concentration of the nucleophile, and nature of the leaving group.
The rate of an SN2 (substitution nucleophilic bimolecular) reaction is influenced by several factors. The correct options are A, B, and C, which indicate that the rate of reaction depends on the concentration of the substrate, concentration of the nucleophile, and nature of the leaving group.
Factors Affecting the Rate of SN2 Reaction
1. Concentration of Substrate (Option A)
- The rate of an SN2 reaction is directly proportional to the concentration of the substrate.
- This is because the substrate molecule must collide with the nucleophile in order for the reaction to occur.
- A higher concentration of substrate means a higher collision frequency and therefore a higher reaction rate.
2. Concentration of Nucleophile (Option B)
- The rate of an SN2 reaction is also directly proportional to the concentration of the nucleophile.
- A higher concentration of nucleophile increases the chances of a successful collision with the substrate, leading to a higher reaction rate.
3. Nature of Leaving Group (Option C)
- The nature of the leaving group on the substrate also affects the rate of an SN2 reaction.
- A good leaving group is one that can easily accept an electron pair and leave the molecule.
- Halides, such as chlorine and bromine, are commonly used leaving groups in SN2 reactions because they are stable and can readily accept an electron pair to leave the molecule.
4. Number of Lone Pairs on Donor Atom (Option D)
- Option D states that the rate of reaction depends on the number of lone pairs on the donor atom.
- However, this statement is incorrect as the rate of an SN2 reaction is not influenced by the number of lone pairs on the donor atom.
- The reaction primarily occurs through a backside attack, where the nucleophile displaces the leaving group by approaching from the opposite side of the bond.
- The number of lone pairs on the donor atom does not affect this process.
Therefore, the correct options for this question are A, B, and C, as the rate of an SN2 reaction depends on the concentration of the substrate, concentration of the nucleophile, and nature of the leaving group.
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One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.Q.In a SN2 reaction rate of reaction depends ona)concentration of substrateb)concentration of nucleophilec)nature of leaving groupd)number of lone pairs on donor atomCorrect answer is option 'A,B,C'. Can you explain this answer?
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One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.Q.In a SN2 reaction rate of reaction depends ona)concentration of substrateb)concentration of nucleophilec)nature of leaving groupd)number of lone pairs on donor atomCorrect answer is option 'A,B,C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.Q.In a SN2 reaction rate of reaction depends ona)concentration of substrateb)concentration of nucleophilec)nature of leaving groupd)number of lone pairs on donor atomCorrect answer is option 'A,B,C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.Q.In a SN2 reaction rate of reaction depends ona)concentration of substrateb)concentration of nucleophilec)nature of leaving groupd)number of lone pairs on donor atomCorrect answer is option 'A,B,C'. Can you explain this answer?.
One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.Q.In a SN2 reaction rate of reaction depends ona)concentration of substrateb)concentration of nucleophilec)nature of leaving groupd)number of lone pairs on donor atomCorrect answer is option 'A,B,C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.Q.In a SN2 reaction rate of reaction depends ona)concentration of substrateb)concentration of nucleophilec)nature of leaving groupd)number of lone pairs on donor atomCorrect answer is option 'A,B,C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.Q.In a SN2 reaction rate of reaction depends ona)concentration of substrateb)concentration of nucleophilec)nature of leaving groupd)number of lone pairs on donor atomCorrect answer is option 'A,B,C'. Can you explain this answer?.
Solutions for One or More than One Options Correct TypeDirection (Q. Nos. 9-14) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.Q.In a SN2 reaction rate of reaction depends ona)concentration of substrateb)concentration of nucleophilec)nature of leaving groupd)number of lone pairs on donor atomCorrect answer is option 'A,B,C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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