Investigation 1 what is the relationship between the concentration of a solution and the amount of transmitted light through the solution

This type of investigation is in accordance with Beer-Lambert law, which shows a linear relationship between the absorbance and the concentration of an absorbing species.

In order to carry this investigation out, a number of samples of the substance being investigated are prepared, each with different concentrations. Then, the transmittance of light through each sample is measured. Finally, the graph between - log (transmittance) and concentration is plotted, to obtain a linear relationship between the two variables.