Following is a table of data showing the absorbance of a solution of cobalt(II) ion at different concentrations at a wavelength of 510 nm.
.
Absorbance Concentration (M) |
0.450 0.044 |
0.691 0.072 |
0.894 0.096 |
1.210 0.125 |
You are given a solution of unknown concentration containing cobalt(II) ions, which gives you an absorbance of 0.67.
Calculate the unknown conc., using data from the table given above.
(A = kC). Use the average ‘k’ value from the above set of data.
