posted by Jay on .
Potassium ferricyanide has an extinction coefficient of 1020 1/M*cm at 420 nm. The absorbance of a sample of unknown concentration at 420 nm is 0.4268. If the path length is 10 mm, determine the concentration of the sample
Convert the path length to cm. Plug in Beer's law equation and solve for c.
A = ε l c