Question

what are weak bases and strong bases?

Answer 1

Those bases that partially dissociate in water to produce OH- ions are called weak bases.
Example - Cu(OH)2 , Mg(OH)2

Those bases that completely dissociate in water to produce OH- ions are called strong bases.
Example - KOH, NaOH

Answer 2

1.In chemistry, a weak base is a chemical base that does not ionize fully in an aqueous solution. As Brønsted–Lowry bases are proton acceptors, a weak base may also be defined as a chemical base in which protonation is incomplete. This results in a relatively low pH compared to strong bases.

2.Strong bases are bases which completely dissociate in water into the cation and OH- (hydroxide ion). The hydroxides of the Group I and Group II metals usually are considered to be strong bases