Which among the following is the strongest acid?

• (A) HClO
• (B) HClO₂
• (C) HClO₃
• (D) HClO₄

The strongest acid among the options provided is HClO₄, also known as perchloric acid. This acid is highly dissociative in water, meaning it releases protons (H⁺ ions) very effectively, making it stronger than the others listed.

Comparison of Acids

Here's a brief overview of the acids mentioned:

• HClO - Hypochlorous acid, a weak acid.
• HClO₂ - Chlorous acid, stronger than hypochlorous but weaker than chloric acid.
• HClO₃ - Chloric acid, a strong acid but not the strongest in this list.
• HClO₄ - Perchloric acid, the strongest acid here.

Why HClO₄ is the Strongest

Perchloric acid has a complete dissociation in aqueous solutions, which contributes to its strength. The presence of more oxygen atoms in its structure increases its ability to stabilize the negative charge after losing a proton, enhancing its acidic properties.