Colorimeter Essay

Record the absorbance values for 4ppm Methyl orange, making sure to zero the machine with the deionised water cuvette after each reading is taken. After I measured out my methyl orange I diluted each with deionised water up to the calibration mark on the volumetric flask. 4. I then poured each solution into separate cuvettes. 5. Recording the absorbance values for each always â€Å"zeroing† in between each reading with a cuvette containing deionised water. 6. Get the absorbance value of the unknown solution. 7. Record results in Tables 8. Prepare a standard curve graph 9. Estimate the concentration of the unknown solution on your graph. Results Part Two Concentration Discussion Using a colorimeter I used different coloured liquids to prove beer lamberts law. I did this experiment three times each time recording my results. I believe I proved beer lamberts law and this can be seen by my results which I have listed. I was also able to find the concentration of an unknown solution by plotting it on my graph using its absorbance number.