Monday, May 7, 2012

Concentration of a Solution: Beer's Law

Objective:  Determine the concentration of an unknown nickel (II) sulfate solution.

Materials:
              Logger Pro, Vernier Colorimeter, Cuvette, 20x150 mm test tubes, 30mL of .40 M NiSO4, 5 mL of NiSO4 unknown solution, two 10 mL pipets, Distilled water, Test tube rack, two 100 mL beakers

Procedure:
              First we were explained the lab and we were demonstrated the unknown solutions. But before figuring those out we were to find five trail numbers first. In this trial number we were supposed to find which one is more concentrated.
   Trail  .40 M NiSO4    Distilled H2O    Concentration                            
     1             2                        8                       .08
     2             4                        6                       .16
     3             6                        4                       .24
     4             8                        2                       .32
     5             10                      0                       .40
Open logger pro and for each solution test the vertical axis has absorbance and the horizontal is the concentration. Collect the data.

Data:
  

Conclusion:
     The concentrations of the solutions were determined in this lab.

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