1. A solution with a pH of 9 has a pOH of

2. Which is more acidic, a solution with a pH of 6 or a pH of 4?

3. How many times more acidic is a solution with a pH of 2 than a solution with a pH of 3?

4. What is the hydrogen ion concentration [H + ] in a solution that has a pH of 8?

5. A solution has a pOH of 9.6. What is the pH? (Use the formula.)

strength = 10⁻²/10⁻³ = 10 times more acidic

Explanation:

1. A solution with a pH of 9 has a pOH of

pH + pOH = 14 = > pOH = 14 - pH = 14 - 9 = 5

2. Which is more acidic, a solution with a pH of 6 or a pH of 4?

pH of 4 = > Higher [H⁺] = 10⁻⁴M vs pH of 6 = > [H⁺] = 10⁻⁶M

3. How many times more acidic is a solution with a pH of 2 than a solution with a pH of 3?

soln with pH = 2 = > [H⁺] = 10⁻²M

soln with pH = 3 = > [H⁺] = 10⁻³M

strength = 10⁻²/10⁻³ = 10 times more acidic

4. What is the hydrogen ion concentration [H + ] in a solution that has a pH of 8?

[H⁺] = 10^-pH = 10⁻⁸M

5. A solution has a pOH of 9.6. What is the pH? (Use the formula.)

pH + pOH = 14 = > pH = 14 - 9.6 = 4.4