Question

Chemistry 202 College of the Canyons Data Sheet Equilibrium of Co** Complexes exact mass of cool 2.6H2O- 0.1803 g mol = 7.57 color-Red 237, 896 x104 Part 1: Determining Absorbance vs Concentration of Tetrahedrally-Coordinated Co** Data Table 1. Absorbance and Color of Com Solutions Mass of CoCl2-6H,0 in 50.00 mL of 2-propanol, 0.1803 g moles Concentration of Cow stock, M Beaker Volume of Coret stock, mL Volume of 2- propanol, ml IM-7.57x104 x 100.01514 0.05 Solution Color Absorbance (A) 9.4 ml very light blue 0.237 A 8.9 ml/light blue 10.451A 8.6 mL slighty darker 0.765A 8 mL dark blue 1.086 A 0.4ml 0.9 mL 1.6 ml 261 mL N 1.00 mL Clear Analysis 1. Calculate the exact Coc concentration of the Count stock solution (Cout], M: 2. Calculate the concentration of each diluted standard solution and also record in the table below. Show one representative calculation for the concentration below:

Answer 1

1. Your Calculation of the exact Co^{​​​​​2+} Concentration of the Co_{​​​​​tet} Stock Solution is Absolutely Right. It will be 0.01516 M.

2.

Becken [cost]m (0.4x0'01516) 16.15 10.479.41 70700X10M 22 Coq 0-01516 112392x108M1 3. (15XO•OISIG = 2378-108(M) 4. 1 3 001514 - 13-1524100%) onqx000151 goq+809 1.6*0001516