Please tell me which reason Hexyl Chloride reacts faster bec

Please tell me which reason Hexyl Chloride reacts faster, because I tried both cyclohexyl chloride options

Please help me which options are correct and which are not.

Indicate which reaction will occur faster. Explain your reasoning. Select the single best answer Hexyl chloride or cyclohexyl chloride with sodium azide in aqueous ethanol O Cyclohexyl chloride reacts faster because it is more soluble in the solvent OHexyl chloride reacts faster because it is less sterically hindered. O Cyclohexyl chloride reacts faster because its carbocation intermediate is more stable. Hexyl chloride reacts faster because hydrogen abstraction is more likely to occur in this compound.

Solution

Hexyl chloride reacts faster because it is less sterically hindered is correct.

Explanation: Reaction of alkyl halide with strong nucleophile, sodium azide involves SN2 mechanism and produces substituted product. SN2 reaction is faster with less sterically hindered alkyl halide. Among hexyl chloride and cyclohexyl chloride; hexyl chloride is less sterically hindered and reacts faster with sodium azide.

The mechanism results in a carbocation rearrangement in which a methyl shift occurs and the mechanism requires dissociation of a poor leaving group are correct.

Explanation: reaction of alcohol with HBr involves SN1 mechanism which requires carbocation rearrangement and occurs at slower rate.