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Objective The objective of this experiment is to accurately determine the density of a solution and to perform an accurate dilution.
Procedure See Chemistry 1094 Lab Manual” pages _____.
Observations
Data Table 1. Mass of solution Trial 1 Mass of flask and stopper before Mass of flask and stopper after adding 10.00 mL Table 2. Dilution of CuSO4 Concentration of original CuSO4 solution Pipette volume for first dilution Volumetric flask volume for first dilution Pipette volume for second dilution Volumetric flask volume for second dilution Absorbance
Trial 2
Calculations Calculate the mass of each 10.00 mL sample, then calculate the average mass and density
Calculate the concentration of the first diluted solution
Calculate the concentration of the second diluted solution
Results Average density of the original CuSO4 solution Final Concentration of diluted CuSO4 solution
Questions 1. Define what is meant by the density of a solution.
2. Define what is meant by the concentration of a solution.
3. What is the difference between the density of a solution and the concentration of a solution? Are they both the same thing? Can they both be expressed in units of g/mL?