Acids And Bases Worksheet - Michalek, Unit 14 Page 22
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27AP Chemsitry--Michalek
22
Unit 14 Acids and Bases
Worksheet 14.4b Solutions of Acids
Name_______________________
d. Use Le Chatelier’s principle to explain why percent dissociation increases as the concentration of a weak
acid decrease.
+
e. Even though the percent dissociation increases from solutions a to c, the [H
] decreases. Explain.
2
4. Calculate the percent dissociation for a 0.22 M solution of chlorous acid (HClO
K
).
2,
a
5. A 0.15 M solution of a weak acid is 3.0% dissociated. Calculate K
a
4
6. A
solution
of
formic
acid
(HCOOH,
K
)
has
a
pH
of
2.70.
Calculate
a
the initial concentration of formic acid in this solution.
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