Analisis penentuan Iodine dengan Potentiometer (Titrino/Titroprocessor)

Peralatan :
Potentiometer = 751 GPD Titrino / Titroprocessor
Electrode = 6.0431.100 Pt Titrode; input 1

Pereaksi :
c(Na2S2O3) = 0.1 mol/L; D0

Sampel :
3 mL c(KI3) = 0.05 mol/L
5 mL c(H2SO4) = 0.5 mol/L
20 mL dist. Water

Rangkuman
· Reaksi yg terjadi :

I2 + 2 S2O32- → 2 I - + S4O62-

Perhitungan :

c(KI3)=EP1*C01/C02/C00;4;mol/L

c(KI3) = concentration of KI3 solution in mol/L
C01 = concentration of titrating agent (0.1 mol/L)
C02 = factor for “normality“ (2)

· Titrate samples immediately.

Jawaban :

c(KI3)=2.997x0.1/2/3=0.0499 mol/L

EP1=2.997 mL
C00=3 mL

Literatur
Metrohm’s Teachware on CD-ROM