Strong vs Weak base [ENDORSED]

[DevanCornelio_1I]

How do we tell the difference between a strong and weak base?

[Barzin Badiee 2K]

A strong base is fully ionized in a solution (gives of OH-) whereas a weak base isn't. This can also be determined by the pkb balue. A lower pkb indicates a stronger base.

[606045283]

Strong bases as said in lecture, "are completely ionized in water", meanwhile a weak base isn't. A tip I also was given in the review sessions was that for strong bases they usually are any elements within the first two columns in the periodic table, ex: -OH, -O, NaOh, CaO

[Ryan Lim 2I]

A rule that helped me is that any of the Group I hydroxides (i.e. alkali metals bound to a hydroxide) as well as the Group II hydroxides besides beryllium and magnesium are considered strong bases.

If you remember solubility rules (which I don't believe we need to know for this class), another rule of thumb that helps me is that basically any soluble salt with a hydroxide is considered a strong base, while everything else is weak.

Hope this helps!