Which of the following possesses the greatest concentration of hydroxide (OH-) ion?

a) a solution with a pH of 3.0

b) a 1 x 10^-4 M solution of HNO3

c) A solution with a pOH of 12.0

d) water

If you could provide a little explanation of why to help me understand it better would be much appreciated. Thanks!

1 Answer

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  • Dr.A
    Lv 7
    1 decade ago
    Favorite Answer

    pH = 3 => [H+]= 10^-3 and [OH-]= 10^-11 M

    [H+]= 1 x 10^-4 and [OH-]= 10^-10 M

    pH = 2 => [H+]=10^-2 and [OH-]= 10^-12 M

    pH = 7 : [OH-]= 10^-7 M ===> your answer

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