lab 7

lab 7 - 4. You can pour the eluent back through the tubes...

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Marcus Knowlton Lab 6 postlab Section L7 Bo 1. . . = . 18 52 ml AgNO3 1 Liter1000 mL 1 mol1 Liter 001852 moles AgNO3 . . / 1748g Unknown250 48g mol2 mol of Cl1 mol of =. Complex 001396moles Cl . . 001396 mol Cl 001852 mol AgNO3 1 mol Cl1 mol =. = ≈ AgNO3 764 1 1 Formula of unknown [Co(NH 3 ) (5) Cl 1 ]Cl (2) 2. a. Hard water contains a high mineral content. b. Residential water softeners uses salt ion-exchange resin to replace calcium and iron type cations with softer sodium ions. Acid chromatography converts unknown salts into acids and bases. . 3 Deionization uses specific ion exchange resins to filter out out mineral salts by binding to them and there by eliminating many of the impurities making it almost like distilled water
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Unformatted text preview: 4. You can pour the eluent back through the tubes to regain the lost ions in the resin. 5. NaNO 3 would not work because the sodium salt formed would not precipitate out but would instead dissolve causing nothing to absorb or precipitate out. 6. In order to determine the HCL content we could have titrated with a strong base and used phenolphthalein as an indicator. 7. Fajans methord would not work because Na mixed with anything does not precipitate out and Ag and thiocyanate form a complex ion....
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