Core
Reactions: Acid-base
Slide 11 of 42
Strong and Weak
Acids
Strong acids are acids that dissociate
(ionize) completely in water, while weak
acids are acids that either do not undergo dissociation at all or undergo
only partial dissociation.
The strong acids you need to
know are: HCl (aq), HBr (aq), HI (aq),
H2SO4 (aq),
HNO3 (aq), HClO4 (aq)
Example
of some weak acids are: HF (aq), H2S (aq),
H2CO3 (aq),
H2SO3 (aq),
CH3COOH(aq). (You will add more to this
list.)
What
does complete and partial dissociation mean?
HB(s l or g) H+(aq) + B–(aq)
Complete
dissociation means that all of HB will ionize into the hydrogen ions and
the anion.
One mol of the acid HB will produce in 1 mol each
of H+(aq) and B–(aq) ions in the solution.