1. Determination of CH3COOH
CH3COOH + NaOH CH3COONa H2O
The sample in the volumetric flask is completed to100 mL with distilled water. A portion of mL is taken to the erlenmayer.
1-2 drops of Phenolphthalein is added and titrated with NaOH till the pink colour is observed.
CALCULATIONS
meq CH3COOH = meq CH3COOH
VCH3COOH x NCH3COOH = VNaOH x NNaOH
From this eqution normality of acetic acid is found. Then when it is multiplied with equivalent weight of acetic acid, the amount is found in g/L.
C (g/L) = NCH3COOH x Eq. Weight. CH3COOH
C (g/L) = NCH3COOH x 60
REFERENCE: Analitik Kimya Pratikleri – Kantitatif Analiz (Ed. Feyyaz ONUR), 2014