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

To arrange the given solutions in order of increasing H+ concentration, we need to consider their acidic or basic properties.

HClO4: It is a strong acid that dissociates completely in water, resulting in a high concentration of H+ ions.
H2SO4: It is also a strong acid and completely ionizes in water, giving a high concentration of H+ ions.
NH4Br: NH4Br is a salt composed of a weak base (NH4+) and a strong acid (HBr). When dissolved in water, NH4+ can act as a weak acid and release a small amount of H+ ions.
KCN: KCN is a salt composed of a strong base (KOH) and a weak acid (HCN). When dissolved in water, CN- acts as a weak base and accepts H+ ions, resulting in a lower concentration of H+.
KBr: KBr is a neutral salt that does not release H+ or OH- ions when dissolved in water.
KOH: KOH is a strong base that dissociates completely in water, yielding a high concentration of OH- ions.

Based on the above information, we can arrange the solutions in increasing order of H+ concentration as follows:

KOH < KBr < KCN < NH4Br < HClO4 < H2SO4

To arrange the solutions in increasing order of H+, we need to compare their acidity or basicity. The H+ concentration is directly related to the acid strength or base strength of a solution.

Here's the step-by-step process to determine the order:

1. Identify the strong acids: HClO4 and H2SO4 are both strong acids. These acids dissociate completely in water, producing a high concentration of H+ ions.

2. Identify the strong bases: KOH is a strong base. It dissociates completely in water, producing a high concentration of OH- ions, which indirectly affects the H+ concentration.

3. Identify the weak acids and bases: NH4Br, KCN, and KBr are all weak acids or salts of weak acids. These compounds partially dissociate in water, resulting in a lower concentration of H+ ions.

Based on the above analysis, we can arrange the solutions as follows, from lowest to highest H+ concentration:

KCN < NH4Br < KBr < KOH < HClO4 < H2SO4

Please note that the relative concentration of H+ ions can also be influenced by factors like size and charge of the ions.