18 public questions tagged with this topic.
Pentan-3-ol (CH₃CH₂CH(OH)CH₂CH₃) dehydrates to pent-2-ene (CH₃CH=CHCH₂CH₃) as the major product with conc. H₂SO₄, following Saytzeff’s rule.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Phenols and Ethers and Uses
Ethanol, a primary alcohol, undergoes acid-catalyzed dehydration via a concerted E₂ mechanism because formation of a primary carbocation is unstable.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Alcohols - Dehydration Oxidation Esterification
SOCl₂ converts 3-pentanol ( CH₃CH₂CHOHCH₂CH₃ ) to 3-chloropentane ( CH₃CH₂CHClCH₂CH₃ ) via substitution.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nature of C-X Bond and Methods of Preparation
KNO₂ substitutes Cl via SN₂ , forming CH₃CH₂CH₂ONO (propyl nitrite), as NO₂⁻ bonds through oxygen.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nature of C-X Bond and Methods of Preparation
SOCl₂ with pyridine converts ethanol to ethyl chloride, releasing SO₂ and HCl gases; SO₂ is the key gaseous byproduct.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nature of C-X Bond and Methods of Preparation
Aqueous KOH provides OH⁻ , which substitutes Cl in the primary alkyl halide CH₃CH₂CH₂Cl to form CH₃CH₂CH₂OH (1-propanol).
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Classification and Nomenclature and Isomerism of Haloalkanes
In sunlight, Cl₂ adds to benzene via free radical mechanism, forming C₆H₆Cl₆ (hexachlorocyclohexane).
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Classification and Nomenclature and Isomerism of Haloalkanes
Two molecules collide → molecularity = 2.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Temperature Dependence - Arrhenius Equation and Activation Energy
Two molecules collide → molecularity = 2.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Order and Molecularity and Units of Rate Constant
One molecule decomposes → molecularity = 1.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Integrated Rate Equations - Zero Order Reactions
Δ[C]/Δt = 3 × 0.01 = 0.03 mol L⁻¹ s⁻¹.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Integrated Rate Equations - Zero Order Reactions
Three molecules collide → molecularity = 3.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Collision Theory - Effective Collisions and Catalyst Effect
