Reactions Of Halogenoalkanes 1 Chemsheets Answers Exclusive May 2026

Reactions of Halogenoalkanes (Haloalkanes)

| Question type | Expected answer | |---------------|----------------| | Mechanism, 1° + NaOH(aq) | SN2, inversion, OH⁻ attacks C–Br | | Mechanism, 3° + H₂O | SN1, carbocation intermediate | | Elimination product from 2-bromopentane | Pent-2-ene (major – more substituted) + pent-1-ene (minor) | | Reagent for substitution to alcohol | Aqueous NaOH, warm | | Reagent for elimination | Ethanolic KOH, heat under reflux | | Why does iodoethane react faster than bromoethane in SN2? | C–I bond weaker, I⁻ better leaving group | | Test for chloroalkane vs iodoalkane | AgNO₃/ethanol – chloroalkane slow white ppt, iodoalkane fast yellow ppt |

Q1: Write mechanism for bromoethane + NaOH(aq)

Answers:

| Halogenoalkane | Product alcohol | Rate (fastest → slowest) | |----------------|----------------|---------------------------| | CH₃CH₂CH₂Br | propan-1-ol | Medium (1°) | | (CH₃)₃CBr | 2-methylpropan-2-ol | Fastest (3°) | | CH₃CH₂CH₂I | propan-1-ol | Fastest overall (I best leaving group) | reactions of halogenoalkanes 1 chemsheets answers exclusive

Question:

Draw SN1 mechanism for (CH₃)₃CBr + H₂O. Answer: Reactions of Halogenoalkanes (Haloalkanes) | Question type |