Reactions Of Halogenoalkanes 1 Chemsheets

Reactions of Halogenoalkanes: A Deep Dive into Chemsheets AS 1030 Answers

Secondary can do both, depending on the solvent and temperature.

Step 1: The C–Halogen bond breaks heterolytically first. A carbocation intermediate forms. (This is the slow, rate-determining step).
Step 2: The nucleophile ($OH^-$) attacks the carbocation.
Key Insight: The rate only depends on the halogenoalkane. Rate = $k[Halogenoalkane]$.

In these reactions, a nucleophile (a lone pair donor) replaces the halogen atom. This is possible because the bond is polar, leaving the carbon electron-deficient ( Chemsheets-AS-1139-Reactions-of-halogenoalkanes-1

Haloalkanes can be reduced to alkanes using reducing agents (e.g., catalytic hydrogenation with Pd/C, or using zinc/acid, or using LiAlH4 in some contexts). Example: R–Br → R–H.

But precipitate only appears after halogen leaves – so reaction must be nucleophilic substitution. Water is the nucleophile here.

Reactions Of Halogenoalkanes 1 Chemsheets | Answers Exclusive Better

Reactions of Halogenoalkanes: A Deep Dive into Chemsheets AS 1030 Answers

Step 1: The C–Halogen bond breaks heterolytically first. A carbocation intermediate forms. (This is the slow, rate-determining step).

Step 2: The nucleophile ($OH^-$) attacks the carbocation.

Key Insight: The rate only depends on the halogenoalkane. Rate = $k[Halogenoalkane]$.

Haloalkanes can be reduced to alkanes using reducing agents (e.g., catalytic hydrogenation with Pd/C, or using zinc/acid, or using LiAlH4 in some contexts). Example: R–Br → R–H.

But precipitate only appears after halogen leaves – so reaction must be nucleophilic substitution. Water is the nucleophile here. Step 1: The C–Halogen bond breaks heterolytically first