Question: what is the most powerful acid ?

Gopal Ramchurn answered on 27 Jun 2013:

I used to think sulphuric acid is the strongest…but Hydrochloric acid is also very strong. I haven’t played with acids since I finished high school… so I don’t know about any others that exist out there… but I did find this on wikipedia that shows that there re stronger acids! Their strength is measured in various ways as you will see and the strongest one is Hydroiodic acid apparently… good I learnt something today!