I would like to calculate the molar solubility and Ksp from the following data: I have calculated them (see the solutions in the table) but, I am concerned that I have done the calculation incorrectly. See images for my calculations. These calculations are for Sample 1. Thank you! Sample 1 Sample 2 Sample 3 Mass of Erlenmeyer Flask 23.59g 23.59g 23.60g Mass of Erlenmeyer Flask + Calcium Hydroxide Solution (lime water) 26.62g 26.65g 26.69g Mass of Calcium Hydroxide Solution 3.03g 3.06g 3.09g Volume of Ca(OH)2 Density = 1.000 g/mL 3.03mL 3.06mL 3.09mL Concentration of HCl (M) 0.1M 0.1M 0.1M Initial HCl Volume in Syringe 1.00mL(1) 1.00mL(2) 1.00mL(3) 1.00mL(1) 1.00mL(2) 1.00mL(3) 1.00mL(1) 1.00mL(2) 1.00mL(3) Final HCl Volume in Syringe 0ml (1) 0ml (2) 0.65mL (3) 0ml (1) 0ml (2) 0.63mL (3) 0ml (1) 0ml (2) 0.63mL (3) Volume of HCl Delivered 2.35mL 2.37mL 2.37mL Moles of HCl Delivered 0.000235 mol 0.000237 mol 0.000237 mol Moles of OH- in Sample 0.000235 mol 0.000237 mol 0.000237 mol Moles of Ca2+ in Sample 0.000118 mol 0.000119 mol 0.000119 mol Molar Solubility (M) 3.89 * 10-2 M 3.89 * 10-2 M 3.85 * 10-2 M Calculated Ksp 2.34*10-4 2.33*10-4 2.27*10-4 Average Calculated Ksp 2.31*10-4
I would like to calculate the molar solubility and Ksp from the following data:
I have calculated them (see the solutions in the table) but, I am concerned that I have done the calculation incorrectly. See images for my calculations. These calculations are for Sample 1. Thank you!
|
|
Sample 1 |
Sample 2 |
Sample 3 |
|
Mass of Erlenmeyer Flask |
23.59g |
23.59g |
23.60g |
|
Mass of Erlenmeyer Flask + Calcium Hydroxide Solution (lime water) |
26.62g |
26.65g |
26.69g |
|
Mass of Calcium Hydroxide Solution |
3.03g |
3.06g |
3.09g |
|
Volume of Ca(OH)2 Density = 1.000 g/mL |
3.03mL |
3.06mL |
3.09mL |
|
Concentration of HCl (M) |
0.1M |
0.1M |
0.1M |
|
Initial HCl Volume in Syringe |
1.00mL(1) 1.00mL(2) 1.00mL(3) |
1.00mL(1) 1.00mL(2) 1.00mL(3) |
1.00mL(1) 1.00mL(2) 1.00mL(3) |
|
Final HCl Volume in Syringe |
0ml (1) 0ml (2) 0.65mL (3)
|
0ml (1) 0ml (2) 0.63mL (3)
|
0ml (1) 0ml (2) 0.63mL (3)
|
|
Volume of HCl Delivered |
2.35mL |
2.37mL |
2.37mL |
|
Moles of HCl Delivered |
0.000235 mol |
0.000237 mol |
0.000237 mol |
|
Moles of OH- in Sample |
0.000235 mol |
0.000237 mol |
0.000237 mol |
|
Moles of Ca2+ in Sample |
0.000118 mol |
0.000119 mol |
0.000119 mol |
|
Molar Solubility (M) |
3.89 * 10-2 M |
3.89 * 10-2 M |
3.85 * 10-2 M |
|
Calculated Ksp |
2.34*10-4 |
2.33*10-4 |
2.27*10-4 |
|
Average Calculated Ksp |
2.31*10-4 |
|
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