Final answer:
HClO₄ is A) strong acid. and a strong electrolyte, as it ionizes completely in water.
Step-by-step explanation:
The subject of the question is perchloric acid (HClO₄), which is asked to be classified as a strong acid, weak acid, strong base, or non-electrolyte. Based on the characteristics of strong acids, which ionize completely in solution, HClO₄ is determined to be a strong acid.
Its dissociation in water is essentially 100% complete, similar to hydrochloric acid (HCl), resulting in a high concentration of hydronium ions (H+) and its conjugate base (ClO₄-). This complete ionization makes HClO₄ not only a strong acid but also a strong electrolyte, as it conducts electric current well due to its full ion dissociation.