Each value below represents a different aqueous solution at 25 °C. Classify each solution as acidic, basic, or neutral.
pH=9.72
pOH=4.69
pOH=13.62
[H+]=7.5e-2
[H+]=7.8e-9
[H+]=1e-7
[OH-]=4.5e-12
[OH-]=3.5e-5
pH=4.09
pOH=7
you're :)
pH>7 = basic
pH<7 = acid
pH = 7 = neutral
H^+ < 1E-7 = acid
H^+ > 1E-7 = basic
H^+ = 1E-7 = neutral
To classify each solution as acidic, basic, or neutral, we need to analyze the given values.
1. pH=9.72: Since the pH is greater than 7, this solution is basic.
2. pOH=4.69: Similar to pH, pOH measures the concentration of hydroxide ions (OH-) in a solution. A pOH value of 4.69 indicates that the concentration of OH- ions is relatively high, making the solution basic.
3. pOH=13.62: A pOH value of 13.62 indicates a high concentration of OH- ions, meaning the solution is basic.
4. [H+]=7.5e-2: The concentration of H+ (hydrogen ions) is given, and since it is less than 1e-7, this solution is considered basic.
5. [H+]=7.8e-9: As the concentration of H+ is less than 1e-7, this solution is basic.
6. [H+]=1e-7: The concentration of H+ is equal to 1e-7, making this solution neutral.
7. [OH-]=4.5e-12: A very low concentration of OH- ions indicates an acidic solution.
8. [OH-]=3.5e-5: The relatively high concentration of OH- ions suggests that this solution is basic.
9. pH=4.09: Since the pH is less than 7, this solution is acidic.
10. pOH=7: A pOH value of 7 is equivalent to a pH of 7, which is considered neutral.
In summary:
- Solutions 1, 2, 3, 4, 5, 8 are basic.
- Solution 6 is neutral.
- Solutions 7 and 9 are acidic.
- Solution 10 is neutral.