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F-9
laboratory. Remember to turn in the original copy of the Observations Sheet before leaving. The
second copy of the Observations Sheet should be kept in your laboratory manual for future reference.
OBSERVATIONS SHEET - EXPERIMENT F
DETERMINATION OF THE IODINE-TRIIODIDE EQUILIBRIUM CONSTANT
NOTE: You must record all buret readings to 0.01 mL accuracy.
Initial concentration of I
-
(aq)
(from KI3 reagent bottle)
___________________M
Concentration of S2O3²
-
(aq)
______________ M
Room Temperature
C
Part II Buret Readings: Titration of the aqueous layer of I
-
, I2 , I3
-
(I
2(aq)
, I3
-
(aq)
) solution
Run 1
Run 2
Run 3
Final buret reading (mL)
Initial buret reading (mL)
Volume added (mL)
S2O3²
-
(aq)
Run 1
Run 2
Run 3
Final buret reading (mL)
Initial buret reading (mL)
Volume added (mL)
Ratio:
vol
titrant
vol
analyte
