Assuming equal concentrations, rank these solutions by pH: hclo4 caoh2 NH3 koh hbro
To rank the solutions by pH, we need to compare the acidity or basicity of each compound. A lower pH indicates a more acidic solution, while a higher pH indicates a more basic solution.
1. HBrO (hydrobromic acid) - This compound is a strong acid and will dissociate almost completely in water, resulting in a low pH.
2. HClO4 (perchloric acid) - Similar to HBrO, HClO4 is a strong acid and will also have a low pH.
3. KOH (potassium hydroxide) - This compound is a strong base. When it dissolves in water, it will produce hydroxide ions (OH-) which will increase the pH of the solution.
4. Ca(OH)2 (calcium hydroxide) - This compound is also a strong base and will behave similarly to KOH, increasing the pH of the solution.
5. NH3 (ammonia) - NH3 is a weak base. It will accept protons (H+) from water, creating OH- ions and increasing the pH.
So, the ranking from lowest to highest pH is as follows:
1. HBrO
2. HClO4
3. NH3
4. KOH
5. Ca(OH)2
To rank these solutions by pH, we need to consider their acid-base properties. pH is a measure of the concentration of hydrogen ions (H+) in a solution. The higher the concentration of H+, the lower the pH value.
First, let's consider the acid-base nature of each compound:
1. HClO4: This is a strong acid and will completely dissociate in water, releasing a large H+ concentration, resulting in a low pH.
2. Ca(OH)2: This is a strong base and will release hydroxide ions (OH-) in water, which will react with H+ to form water. As a result, the concentration of H+ ions will decrease, leading to a higher pH.
3. NH3: This is a weak base and will accept H+ ions when dissolved in water, resulting in a low concentration of H+ ions and a higher pH.
4. KOH: Similar to Ca(OH)2, KOH is a strong base and will release hydroxide ions in water, leading to a higher pH.
5. HBrO: This is a weak acid and will partially dissociate in water, resulting in a low concentration of H+ ions and a higher pH.
Based on this analysis, we can rank the solutions from the lowest to the highest pH as follows:
1. HClO4 (lowest pH)
2. HBrO
3. NH3
4. Ca(OH)2
5. KOH (highest pH)
It's important to note that the exact pH values of these solutions cannot be determined without knowing their concentrations. However, based on their acid-base properties, we can make an ordering based on relative pH levels.
HClO4 is strong acid. pH VERY low.
HBrO is a weak acid. pH higher than HClO4 but still lower than 7.
NH3 is a weak base. pH slightly more than 7 (maybe 8.5-10).
Ca(OH)2 is strong base. Greater than NH3 but less than KOH.
KOH is a very strong base and is VERY much higher than all of the others.