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10. Acids and Bases

The pH Scale

10. Acids and Bases

The pH Scale

Multiple Choice
Which of the following statements about aqueous solutions is/are true?
Multiple Choice
What is the Kw of pure water at 20.0°C, if the pH is 7.083?
Open Question
In an acidic solution, how does the concentration of H₃O⁺ compare to the concentration of OH⁻?
Open Question
If a base is added to pure water, why does the [H₃O⁺] decrease?
Open Question
Calculate the [H₃O⁺] of each aqueous solution with the following [OH⁻]:d. bile, 2.5 x 10⁻⁶ M
Open Question
Calculate the [H₃O⁺] of each aqueous solution with the following [OH⁻]:a. baking soda, 1.0 x 10⁻⁶ M
Open Question
State whether each of the following is acidic, basic, or neutral:c. drain cleaner, pH 11.2
Open Question
Why does a neutral solution have a pH of 7.0?
Open Question
If you know the [OH⁻ ], how can you determine the pH of a solution?
Open Question
Calculate the pH of each solution given the following:f. [OH⁻] = 8.2 x 10⁻⁴ M
Open Question
Calculate the pH of each solution given the following:c. [OH⁻] = 1 x 10⁻⁵ M

Complete the following table:

Complete the following table:

What is the difference between H⁺ and H₃O⁺?

When food enters the stomach, HCl is released and the [H₃O⁺] of the stomach fluid rises to 4 x 10⁻² M. What is the pH of the stomach fluid?