Analisis asam oxalat dlm fasa organik dg alat Titrino / Potensiometri

Equipment
Potentiometer = 751 GPD Titrino / Titroprocessor
Electrodes = 6.0103.100 pH glass electrode; input 1
6.0726.100 Ag/AgCl double junction reference electrode (LiCl sat. in ethanol)

Reagents
c(TBAOH) = 0.1 mol/L; D0
TBAOH = Tetrabutyl ammonium hydroxide

Sample
2 mL c(C2H2O4) = 0.1 mol/L; HOOC-COOH
25 mL ethanol

Remarks
Calculations:

Oxalic=EP2*C01/C02/C00;3;mol/l

Oxalic = concentration of oxalic acid in mol/L
C01 = concentration of titrating agent (0.1 mol/L)
C02 = factor for “normality“ (2) · Compare also titration in aqueous medium, application No. 1-4

Answer

Oxalic = 4.221 x 0.1 / 2 / 2 = 0.106 mol/L

EP1 = 2.048 mL
EP2 = 4.221 mL
C00 = 2.00 mL

Literature
Metrohm’s Teachware on CD-ROM