Titration–II ( Unknown oxalic acid ) Vs (Link NaOH) Burette is washed with water, rinsed with oxalic acid solution and filled with same oxalic acid solution up to the zero mark. Exactly ml of NaOH solution is pipetted out into the clean, washed conical flask. To This solution to drops of phenolphthalein indicator is added and titrated against oxalic acid solution from the burette. oxalic acid is added drop wise till the pink colour disappears completely.
Burette reading is noted and the same procedure is repeated to get concordant values. X organic organic - - - - Titration –II (Link NaOH )Vs ( Unknown oxalic acid solution) s.no Volume of NaOH link (ml) Burette readings Concordant value (Volume of oxalic acid) (ml) Initial (ml) Final (ml) Calculation : Volume of Unknown oxalic acid solution V ml Normality of Unknown oxalic acid solution N ? N Volume of NaOH solution V ml Normality NaOH solution N N According to normality equation: V N = x V x N x V N N = V Normality of Unknown oxalic acid solution N = Weight calculation: The amount of oxalic acid dissolved in lit of the solution = (Normality) x (equivalent weight) The amount of oxalic acid dissolved in ml of the solution = Normality x equivalentweight x Y × x x g Report : The amount of oxalic acid dissolved in ml of the solution = g Y organic organic - - - -