Calculate the pH of a buffer solution produced by adding 4.00g of sodium ethanoate to 1dm^3 of 0.01M ethanoic acid. The Ka of ethanoic acid is 1.84x10^-5 mol/dm^3 at 300K.
Calculate the pH of this buffer if 5cm^3 of 0.1M HCl is added.
I tried using this pka=ph-log HA/H+ but couldn't do it!
+rep