How do you tell a strong acid from a weak acid?

Answer 1

Using the pH Scales, if I have 2 Acids, one with the pH of 2 and another with the pH of 5.8, the Acid with A pH of 2 is stronger. 7 in the pH scale means Nuetral, and 14 means very strong Alkaline.

Answer 2

A strong acid completely dissociates in water, producing a large amount of hydronium ions. A weak acid only partially dissociates, resulting in fewer hydronium ions being produced. This difference in dissociation behavior can be measured by looking at the acid dissociation constant (Ka) values.