one Trial two KIO3 solution taken (mL) 1.70 16.5 Moles of KIO3 1.06 x 10^-3 1.06 x 10^-3 Final buret reading (mL) 17.0 33.5 Initial buret reading 0 17.0 Volume of Na2S2O3 solution (mL) 17.0 16.5 Molarity of Na2S2O3 solution (MOL/L) 0.374 0.389 MEAN molarity (mol/L) 0.382 Filtrate Trail one Trail two Final buret reading (mL) 24.0 47.9 Initial buret reading (mL) 0 24.0 Volume of Na2S2O3 solution (mL) 24.0 23.9 Moles of Na2S2O3 used 0.00917 0.00913 Moles if IO3^- present initially 7.05 x 10^-4 7.02 x 10^-4 Molarity of IO3^- (mol/L) 3.53 x 10^-2 3.51 x 10^-2 Average 1.7 x 10^-4 1a. Calculate the solubility of Ca(IO3)2 from your results with the first and second filtrates 1c. Calculate Ksp for Ca(IO3)2 using the mean solubilitity
|
Trial one |
Trial two |
KIO3 solution taken (mL) |
1.70 |
16.5 |
Moles of KIO3 |
1.06 x 10^-3 |
1.06 x 10^-3 |
Final buret reading (mL) |
17.0 |
33.5 |
Initial buret reading |
0 |
17.0 |
Volume of Na2S2O3 solution (mL) |
17.0 |
16.5 |
Molarity of Na2S2O3 solution (MOL/L) |
0.374 |
0.389 |
MEAN molarity (mol/L) |
0.382 |
|
Filtrate
|
Trail one |
Trail two |
Final buret reading (mL) |
24.0 |
47.9 |
Initial buret reading (mL) |
0 |
24.0 |
Volume of Na2S2O3 solution (mL) |
24.0 |
23.9 |
Moles of Na2S2O3 used |
0.00917 |
0.00913 |
Moles if IO3^- present initially |
7.05 x 10^-4 |
7.02 x 10^-4 |
Molarity of IO3^- (mol/L) |
3.53 x 10^-2 |
3.51 x 10^-2 |
Average |
1.7 x 10^-4 |
|
1a. Calculate the solubility of Ca(IO3)2 from your results with the first and second filtrates
1c. Calculate Ksp for Ca(IO3)2 using the mean solubilitity
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