Question

Which among the following is the correct formula of perchloric acid?

• A. $HCl{O}_3$
• B. $HCl{O}_4$
• C. $HCl{O}_2$
• D. $HClO$

Answer 1

Answer: (B)

$HCl{O}_4$

Perchloric acid is a mineral acid with the formula $HCl{O}_4$. Usually found as an aqueous solution, this colorless compound is a stronger acid than sulfuric acid and nitric acid. It is a powerful oxidizer when hot, but aqueous solutions up to approximately 70% by weight at room temperature are generally safe, only showing strong acid features and no oxidizing properties.