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Unformatted text preview: 4 2-in the unknown. By using this concentration, it is possible to predict the Ksp by simple equilibrium equations. The Ksp calculated was 5.77x10-27 , and the molarity solubility of Ag 2 CrO 4 is 1.13x10-9 . With the addition of AgNO 3 , the solubility of Ag 2 CrO 4 is decreased. An error could have occured in the dilutions of the solutions. Also, because our dilution molarities were based on previous dilutions, the smaller the concentration (the more dilutions) the more room for error in the dilutions. Also, the absorbances could have been effected by little smudges or unclean test tubes. By using Beer’s law, it is possible to determine the solubility of an insoluble salt. Also, if a common ion is in the solution, it makes the salt less soluble. This molar solubility can be measured if the amount of common ion is known....
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This lab report was uploaded on 04/07/2008 for the course CHEM 1200 taught by Professor Mcintosh during the Spring '08 term at Rensselaer Polytechnic Institute.
- Spring '08