Question

1. Standardization of the sodium thiosulfate solution

Volume of 0.0100M KIO3 samples 10 mL

Data	Trial 1	Trial 2	Trial 3
Volume of Na2S2O3 Titrant Final Buret Reading	0.76 mL	0.73mL	0.78mL
Initial Buret reading	7.00 mL	7.00 mL	7.00mL
Net Volume of Na2S2O3	6.24 mL	6.27 mL	6.22 mL
Calculated concentration of Na2S2O3	(?) M	(?) M	(?)

2. Molar Solubility of Ca(IO3)2 in pure water

Temperature of the saturated solution of calcium iodate = 22.8 celcius

Volume (or Mass) of saturated calium iodate solution titrated = 5 mL (or g)

Data	Trial 1	Trial 2	Trial 3
Volume of Na2S2O3 titrant Final buret reading	0.06 mL	0.08 mL	0.07mL
Initial Buret reading	3.00 mL	3.00 mL	3.00mL
Net Volume of Na2S2O3	2.94 mL	2.92 mL	2.93 mL
Calculated concentration of IO3-	(?) M	(?) M	(?) M

what is the calculated concentration of Na2S2O3 and the calculate concentration of IO3?

Answer 1