• Water and the Fitness of the Environment

    Sample pH problems

    1.  If the Hydrogen ion concentration of a lake is 10-5 M:

    What is the pH?

    Would you describe it as: strongly acidic, moderately acidic, neutral, moderately basic, strongly basic?

    What is the hydroxide concentration of this lake?


    2.  If an aqueous solution has 1 X 10-3 M hydroxide ions, what is the pH of this solution?



    3.  A solution with a pH of 4 has how many more H+  ions than a solution with a pH of 7?

    Scroll down for answers.



    1.  pH 5; moderately acidic; 10-9

    2.  pH 11

    3.  1000
    Bicarbonate Buffer System:
Last Modified on September 12, 2011