Working on a lab in which we calculate the equilibrium constant from an absorbance value but my professor never told us how to calculate this.

The original formula is as follows: Co(H20)6^2+ + 4Cl^- ->CoCl4^2- + 6H20

Table 1: Original mixtures

Trial Grams of CoCl2x 6H20 HCl(M) HCl(mL) H20(mL)

1 0.01 3 10 10

2 0.02 3 10 10

3 0.1 0.3 10 10

4 0.1 3 10 10

5 0.1 6 10 10

6 0.1 12 10 10

7 0.2 3 10 10

Table 2: For the absorbance values

Trial Wavelength Absorbance

1 500.3 0.008387841

2 500.3 0.023098562

3 500.3 0.092348

4 500.3 0.110676

5 500.3 0.112765

6 500.3 0.148421

7 500.3 0.169739