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Only One Option Correct Type
Direction (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Q.
Which of the following statements about a SN1 mechanism is true?
- a)The reaction is fastest with 3° halides
- b)The rate of reaction increases when the solvent is changed from acetone to ethanol
- c)The identity of the leaving group does not affect the reaction rate
- d)Both (a) and (b)
Correct answer is option 'D'. Can you explain this answer?
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Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section con...
SN1 Mechanism: Characteristics and Factors
SN1 (Substitution Nucleophilic Unimolecular) mechanism is a type of nucleophilic substitution reaction where the rate-determining step involves the formation of a carbocation intermediate. Let's analyze each option to find out which of the following statements is true about the SN1 mechanism.
(a) The reaction is fastest with 3 halides
- This statement is true because the rate of SN1 reaction depends on the stability of the carbocation intermediate. The tertiary halides are more stable than secondary halides, which are more stable than primary halides. Therefore, the reaction is fastest with 3 halides.
(b) The rate of reaction increases when the solvent is changed from acetone to ethanol
- This statement is false because the rate of SN1 reaction depends on the polarity of the solvent. Polar solvents stabilize the transition state and carbocation intermediate by solvation, but nonpolar solvents do not. Therefore, the rate of reaction increases when the solvent is changed from ethanol (polar) to acetone (more polar).
(c) The identity of the leaving group does not affect the reaction rate
- This statement is false because the rate of SN1 reaction depends on the leaving group ability. A good leaving group is weakly basic and stable, which means it can easily accept an electron pair. For example, iodide is a better leaving group than chloride because it is more stable and less basic. Therefore, the identity of the leaving group affects the reaction rate.
(d) Both (a) and (b)
- This statement is false because only option (a) is true, and option (b) is false. Therefore, the correct answer is option (a).
In conclusion, the SN1 mechanism is a type of nucleophilic substitution reaction that involves the formation of a carbocation intermediate. The rate of SN1 reaction depends on several factors, including the stability of the carbocation intermediate, the polarity of the solvent, and the leaving group ability.
SN1 (Substitution Nucleophilic Unimolecular) mechanism is a type of nucleophilic substitution reaction where the rate-determining step involves the formation of a carbocation intermediate. Let's analyze each option to find out which of the following statements is true about the SN1 mechanism.
(a) The reaction is fastest with 3 halides
- This statement is true because the rate of SN1 reaction depends on the stability of the carbocation intermediate. The tertiary halides are more stable than secondary halides, which are more stable than primary halides. Therefore, the reaction is fastest with 3 halides.
(b) The rate of reaction increases when the solvent is changed from acetone to ethanol
- This statement is false because the rate of SN1 reaction depends on the polarity of the solvent. Polar solvents stabilize the transition state and carbocation intermediate by solvation, but nonpolar solvents do not. Therefore, the rate of reaction increases when the solvent is changed from ethanol (polar) to acetone (more polar).
(c) The identity of the leaving group does not affect the reaction rate
- This statement is false because the rate of SN1 reaction depends on the leaving group ability. A good leaving group is weakly basic and stable, which means it can easily accept an electron pair. For example, iodide is a better leaving group than chloride because it is more stable and less basic. Therefore, the identity of the leaving group affects the reaction rate.
(d) Both (a) and (b)
- This statement is false because only option (a) is true, and option (b) is false. Therefore, the correct answer is option (a).
In conclusion, the SN1 mechanism is a type of nucleophilic substitution reaction that involves the formation of a carbocation intermediate. The rate of SN1 reaction depends on several factors, including the stability of the carbocation intermediate, the polarity of the solvent, and the leaving group ability.
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Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section con...
(a) In tertiary alkyl carbonation, +I effect of the 3 alkyl groups stabilises the central carbon atom more than 2′ or 1′ carbocation.
(b) Polar medium increases the rate of Sn1 reaction.
(b) Polar medium increases the rate of Sn1 reaction.
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Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer?
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Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer?.
Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer?.
Solutions for Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Only One Option Correct TypeDirection (Q. Nos. 1- 26) This section contains 26 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which of the following statements about a SN1 mechanism is true?a)The reaction is fastest with 3° halidesb)The rate of reaction increases when the solvent is changed from acetone to ethanolc)The identity of the leaving group does not affect the reaction rated)Both (a) and (b)Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice JEE tests.
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