Arrange the following 0.10 M solutions in order of increasing H+ : HClO4 , H2SO4, NH4Br , KCN, KBr, KOH

2 answers

If you want to make sure you are correct I would calculate the pH of 0.1M solutions of each, then you will know how to arrange them.
I would look at the following:
H2SO4
HClO4
NH4Br
KBr
KCN
KOH
KOH