(PDF) Analytic AL | Idayu Razali

Trang chủ » Khc8h4o4 + Naoh = Knac8h4o4 + H2o » (PDF) Analytic AL | Idayu Razali

Có thể bạn quan tâm

Determination of Acetic acid content in VinegarCzaika Kate Irica Cervantes

The purpose of this experiment is to determine the acetic acid (CH3COOH) content in a commercial vinegar (Datu Puti vinegar) using a titrimetric method, to distinguish whether the acidity of the vinegar meets the minimum acetic acid content specified by national standards, determine the relative concentration of Hydrochloric acid (HCl) and Sodium Hydroxide (NaOH) and to know how to standardize the latter with Potassium Acid Pthalate (KHC8H4O4) (KHP). In order to determine the acetic acid content of vinegar, 250ml distilled water was added to 25ml vinegar in a volumetric flask. Three flasks containing 50 aliquots of vinegar solution was added with 50ml distilled water and two drops of phenolphthalein indicator (C20H14O4). The flasks were titrated with 0.1M Sodium hydroxide until it reached the endpoint where a color change from colorless to light pink was observed. The result of the analysis showed that Datu puti vinegar has 4.1652% acetic acid content. Therefore, the acetic acid content of the Datu puti vinegar met the 4% acetic acid content of vinegar by the national standards although the obtained result was lower than the declared acetic acid content in the label of Datu puti vinegar.

downloadDownload free PDFView PDFchevron_right

Từ khóa » Khc8h4o4 + Naoh = Knac8h4o4 + H2o