What does a strong acid mean?

Answer 1

Usually an acid with a pH of about 1 or 2. Some examples are hydrochloric acid (HCl), nitric acid (HNO3) & sulfuric acid (H2SO4).

More specifically a strong acid is a substance that when dissolved in water, completely dissociates into ions with the positive ion being hydrogen (H+). This usually does yield a very low pH unless the acid itself is in a very low concentration.

Answer 2

It means it has completely diassociated ions, weak acids partially diassociated ions

Answer 3

It gives up an ion (H+) very easily to a base. A strong base will accept that ion very easily.

Answer 4

It dissociates completely into ions