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April 16, 2014

Homework Help: Chemistry

Posted by Sam on Monday, April 9, 2012 at 8:59pm.

Need help with AP chemistry, specifically Acids and Bases

The acid ionization constant, Ka, for propanoic acid, C2H5COOH, is 1.3  10
-5
.
(a) Write the expression for the acid-dissociation constant, Ka for propanoic acid.

(b) Calculate the hydrogen ion concentration, [H
+
], in a 0.300 M propanoic acid.

(c) Calculate the percentage of propanoic acid molecules that are ionized in 0.300 M propanoic
acid.

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