For propanoic acid (HC3H5O2, Ka = 1.3 10-5), determine the concentration of all species present, the pH, and the percent dissociation of a 0.170 M solution.

Question

For propanoic acid (HC3H5O2, Ka = 1.3  10-5), determine the concentration of all species present, the pH, and the percent dissociation of a 0.170 M solution.

PLEASE HELP ME DO THIS PROBLEM.

DrBob222 · Accepted Answer

I don't like to type all that stuff, so propanoic acid I will call HP.
HP ==> H^+ + P^-
Ka = (H^+)(P^-)/(HP)
H^+ = x
P^- = x
HP = 0.170-x
Substitute into Ka and solve for x, then convert to pH.

% diss = [(H^+)/0.170]*100 = ??
Post your work if you get stuck.

AMANDIP · Answer

For propanoic acid (HC3H5O2, Ka = 1.3 10-5), determine the concentration of all species present, the pH, and the percent dissociation of a 0.170 M solution.
[HC3H5O2]:

[C3H5O2‾]:

[H+] :

[OH ‾]:

pH :

i need help on how to find the concentration of these also in Moles.