Final answer:
Hydrazoic acid, HN3, has a Lewis structure with central nitrogen bonded to one nitrogen with a triple bond (carrying a positive charge) and another nitrogen with a single bond, alongside a hydrogen atom. Its dissociation is represented by HN3(aq) ⇒ H+(aq) + N3-(aq) and does not proceed 100% due to its weak acidic nature, resulting in an equilibrium in solution.
Step-by-step explanation:
The correct Lewis structure for hydrazoic acid (HN3) is as follows: nitrogen (N) at the central position, bonded to another nitrogen with a single bond and one nitrogen with a triple bond. The terminal nitrogen, which is bonded by a triple bond, carries a positive charge, and the central nitrogen carries a lone pair of electrons. The hydrogen is attached to the central nitrogen atom with a single bond.
Regarding the dissociation of hydrazoic acid, the balanced chemical equation is:
HN3(aq) → H+(aq) + N3-(aq)
This reaction does not proceed 100% to products because hydrazoic acid is a weak acid. In solution, it establishes an equilibrium between the reactants and products rather than dissociating completely.