[ninto]

Hello, I've just had an intro to acid/base conjugates.  For most examples, a weak acid/base had a strong conjugate, which makes sense to me.
But then, I was told that ammonia is a weak base, and that it's conjugate acid, ammonium ion is a weak acid. Is this correct? How can both conjugates be weak?

[AWK]

extremely

weak acid/base had a strong conjugate

.
Medium weak acid has a medium weak conjugate since
K_a x K_b = K_w

[ninto]

Thanks, so they are both just 'average' in strength?? not both weak?

[Borek]

Average in a sense 'there are much stronger and much weaker'.