Strong and Weak Acids

[Michelle_Nguyen_3F]

Hello!
How would we determine if an acid is strong or weak? I understand that strong acids produce more proton in a solution than a weak acid, but how would we know that? Thank you!

[Aya_Elarid_2H]

Take for example hydrogen chloride (HCl). Strong acids are completely ionized in water, that means that all the HCl break up into H and Cl ions. More H ions mean that the acid is more acidic. Strong acids also have a smaller pH.
Weak acids, on the contrary, only partly ionize into H and other ions, called Acid Radicals.Weak acids are also partly dissociated in solution, meaning that there are still ions(H+) floating. For example take ethanoic acid. It's CHCOOH dissolved in water. Since only part of the CHCOOH breaks up into CHCOO ions and H ions it makes it a weak acid.