Final answer:
The salt formed in the reaction HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l) is NaCl, known as sodium chloride. This is a result of a neutralization reaction between an acid and a base.
Step-by-step explanation:
For the acid-base reaction HCl + NaOH that proceeds as HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l), the salt formed is NaCl, which is sodium chloride. This reaction is a classic example of a neutralization reaction, where an acid reacts with a base to produce a salt and water.
Writing the complete ionic form of the equation, we have H+(aq) + Clˍ(aq) + Na+(aq) + OHˍ(aq) → Na+(aq) + Clˍ(aq) + H₂O(l). The sodium (Na+) and chloride (Clˍ) ions are spectator ions and do not participate actively in the reaction, leaving the net ionic equation as: H+(aq) + OHˍ(aq) → H₂O(l).