Wednesday
April 23, 2014

Homework Help: Chemistry

Posted by Alice on Monday, February 16, 2009 at 4:02pm.

What is the pH of a solution made up of 50cm^3 of 1M Ethanoic Acid and 25cm^3 of 1M sodium ethanoate? Assume Ka for Ethanoic acid is 1.8 x 10^-5 mol dm^-3

I'm not quite sure how to do this. I was going to use the equation pH = pKa + log[A-]/[HA] but it doesn't seem to work

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