Chemistry: Matter and Change

Section 3: Hydrogen Ions and pH

Self Check Quizzes

1
pH is defined as __________.
A)log [H+]
B)-log [H+]
C)log [OH-]
D)-log [OH-]
2
What is the concentration of hydrogen ions in a solution that has a pH of 4.32?
A)4.8 x 10-5M
B)6.2 x 10-4M
C)5.1 x 10-4M
D)8.6 x 10-5M
3
Calculate the pH of a solution that has a [OH-] = 2.50 x 10-4M.
A)0.4
B)3.6
C)-3.6
D)10.4
4
Calculate the Ka for a 0.10 M solution of the weak acid HCN; the pH of the solution is 5.104.

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A)6.2 x 10-11
B)6.2 x 10-10
C)6.2
D)-6.2 x 10-11
5
Kw is the product of ________.

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A)[H2O][H+]
B)[H2O][H2O]
C)[H+][OH-]
D)[H2O][OH-]
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