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lecture on exp 5 - CHEM 6BL Experiment 5 Qualitative...

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CHEM 6BL Experiment 5: Qualitative Analysis Instructor: Dr. Sandrine Berniolles Page 1 Analytical Chemistry Fundamental branch of Chemistry that involves separating, identifying, and determining the relative amounts of the components in a sample of matter Qualitative Analysis : Identifying the chemical species that make-up a sample Quantitative Analysis : Determining the relative amount of one or more of these species, or analytes , in numerical terms 1 Experiment #5: Qualitative Analysis Relevant Concepts/Topics: Aqueous Equilibria & Solubility Le Chatelier’s Principle (H S 2 H + + S 2 ) 2 Le Chatelier’s Principle (H 2 S 2- Redox Reactions (in acid or base ) More Inorganic Complex Chemistry Goal: identify metal ions in an unknown ion solution (detective work) Qualitative Analysis Similar to gravimetric analysis (Expt. #1) in that precipitation is involved B t i t i l i i tit ti 3 But gravimetric analysis is quantitative Expt. #5: You will use your knowledge of precipitation and K sp values to identify various metal ions qualitatively
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