Final answer:
The predicted reactions for a 1º alkyl halide with a strong base, weak base, and poor nucleophile are explained.
Step-by-step explanation:
The predicted reaction of a 1º alkyl halide with a strong base is an elimination reaction, specifically an E2 reaction. In an E2 reaction, the base removes the hydrogen atom adjacent to the halogen atom, resulting in the formation of an alkene. The reaction follows a one-step concerted mechanism.
When a 1º alkyl halide reacts with a weak base, the reaction proceeds via an SN2 substitution reaction. In an SN2 reaction, the weak base attacks the carbon atom, displacing the halide ion. This reaction also follows a one-step concerted mechanism.
For a poor nucleophile, the reaction does not proceed significantly as the nucleophile is unable to effectively attack the carbon atom and displace the halide ion.