[whatisbarium2sodium]

Im not sure on how to approach the problem.
Assuing the reaction is

HC3H3O2  H+  + C2H3O2-

used the measured pH (2.42) and the total concentration (.1M) to calculate the actual concentration of each species.

Im not really sure where to start on this problem. please give me a push. i dont want the answer. just a hint on where to start.
thankyou for helping.

[JustinCh3m]

Are you familiar with the "I.C.E. method" and do you know how to write an equilibrium expression for a weak acid? 

[whatisbarium2sodium]

no i dont.. ive never heard of that. im going to look it up in my book

[AWK]

Im not sure on how to approach the problem.
Assuing the reaction is

HC3H3O2  H+  + C2H3O2-

used the measured pH (2.42) and the total concentration (.1M) to calculate the actual concentration of each species.

 

For acetic acid you never get pH=2.42. For 0.1 M acetic acid pH at room temperature is close to 2.9.