Tuesday, 17 March 2015

PENETAPAN KADAR CUKA (CH3COO-) METODE ALKALIMETRI (KIMIA AMAMI)

PENETAPAN KADAR CUKA (CH3COO-)

Metode                 : Alkalimetri

Bahan                    : Cuka makan

Prinsip                  : Penetralan asam-basa

Reaksi                    : CH3COOH + 2NaOH à CH3COONa + H2O

Reagensia           :  - NaOH 0,1 N
-   Indikator PP 1 %

Prosedur              :  - Dipipet sampel 10,0 ml, masukkan dalam erlenmeyer
-   Ditambah indikator PP 1 %
-   Titrasi dengan larutan standar NaOH 0,1 N dari tidak berwarna menjadi merah muda (konstan)

Perhitungan      : ml titrasi x N.NaOH x BE CH3COOH x 100%
                                                                ml.sampel x 1000
                                   = ...................... %

                                   BE = BM à 60,05
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