Q. Which is the strongest acid in the following ?
A) H₂SO₄
B) HClO₃
C) HClO₄
D) H₂SO₃
Explanation
[Solution from source] HClO₄ has chlorine in its highest oxidation state (+7), and its conjugate base ClO₄⁻ is highly stabilised by resonance, making it the strongest acid. H₂SO₄ is strong but weaker than HClO₄, while HClO₃ and H₂SO₃ are weaker still. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.