Which of the following anions act as weak bases in solution?

ClO4-
ClO-
C2H3O2-
Cl-

I think its ClO4- and Cl-

1 answer

HClO_4 and HCl are strong acids

all of those with an -OH would be weak bases

Strong bases:
LiOH, NaOH, KOH, Ca(OH)_2, Sr(OH)_2, Ba(OH)_2