Rank the solutions in order of decreasing [h3o+]. rank solutions from largest to smallest hydronium ion concentration. to rank items as equivalent, overlap them. 0.10 m hc2h3o20.10~ m~ h c subscript2 h subscript3 o subscript2 0.10 m hf0.10~ m~ h f 0.10 m hbr0.10~ m~ h b r 0.10 m hc6h5o0.10~ m~ h c subscript6 h subscript5 o


0.10M HCN <0.10 M HClO <0.10 M HNO₂ <0.10 M HNO₃


We are comparing acids with the same concentration. So what we need to do first is find out if we have any strong acids and for the rest (weak acids) compare them to their Ka (see them in reference tables) since the more we know the Ka, the more Hydrogen the concentration in these solutions will be at the same concentration.

HNO₃ is a strong acid and will have the highest concentration of hydrogen.

HCN Ka = 6.2 x 10⁻¹⁰

HNO₂ Ka = 4.0 x 10⁻⁴

HClO Ka = 3.0 x 10⁻⁸

Then the ranking from the lowest hydrogen concentration to the highest concentration is:

0.10M HCN <0.10 M HClO <0.10 M HNO₂ <0.10 M HNO₃