Need help with AP chemistry, specifically Acids and Bases
The acid ionization constant, Ka, for propanoic acid, C2H5COOH, is 1.3 10
(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
Chemistry - DrBob222, Monday, April 9, 2012 at 10:08pm
Let's call propanoic acid HP.
.........HP ==> H^+ + P^-
Ka = (H^+)(P^-)/(HP)
Substitute from the ICE chart above and solve for x = (H^+).
%ion = [(H^+)/(HP)]*100 = [(?H^+)/0.3]*100
Post your work if you get stuck.