Latest questions in this category.
Primary halides react slowest with AgNO₃ via SN₁ . CH₃CH₂CH₂I forms AgI (yellow) slowest among the options.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
An allylic halide has the halogen on a carbon adjacent to a double bond. CH₂=CHCH₂CH₂Cl (4-chloro-1-butene) is allylic.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
CH₂=CHCH₂Cl (allyl chloride) forms a stable allylic carbocation via SN₁ , reacting with AgNO₃ to form AgCl .
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
An allylic halide has the halogen on a carbon adjacent to a double bond. CH₃CH=CHCH₂Cl (4-chloro-2-butene) is allylic.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
SN₁ reactivity increases with carbocation stability. (CH₃)2CHCH₂C(CH₃)2Cl forms a tertiary carbocation, making it most reactive.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
HBr reacts with 2-propanol ( CH₃CHOHCH₃ ) to form 2-bromopropane ( CH₃CHBrCH₃ ) via nucleophilic substitution.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
Thionyl chloride ( SOCl₂ ) reacts with alcohols to form alkyl chlorides, producing SO₂ and HCl , both gases, making it preferred for pure product formation.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
Chlorine adds across the double bond of ethene in a non-polar solvent like CCl₄ , forming 1,2-dichloroethane ( CH₂ClCH₂Cl ).
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
AgNO₃ in ethanol tests SN₁ reactivity. (CH₃)3CBr (tertiary) forms a stable carbocation, reacting fastest.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
CH₃CHClCH₂CH₃ (2-chlorobutane) forms a planar carbocation via SN₁ , leading to a racemic mixture of 2-butanol.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
A vinylic halide has the halogen on a carbon of a C=C bond. CH₃CH=CHBr (1-bromopropene) is vinylic.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
SN₁ reactivity increases with carbocation stability. (CH₃)3CCl (tertiary) forms a stable tertiary carbocation, making it most reactive.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
