Experiment #1: Separation of Acid‚ Base‚ and Neutral Compounds from a Solid Mixture by Liquid-Liquid Extraction Introduction Liquid-liquid extraction is a technique used to separate chemical substances in order to purify or identify the various components of a mixture. Flavors‚ spices‚ perfumes‚ and medicines are just some of the everyday things that are extracted from plants and other natural sources [1]. The basic principle used to carry out this separation is the mixing of two liquids that are
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performing redox reactions between irons oxidation states. Materials: test tube rack 6 test tubes- 25 x150 mm 25 mL graduated cylinder 6 stoppers 6 mL distilled water 6 mL Iron (III) chloride solution (0.02M FeCl3 x 6H2O) 6 mL Iron (II) sulfate solution (0.02M FeSO4 x 7H2O) 1 drop Potassium ferricyanide solution(0.1M K3Fe(CN)6) 1 drop Potassium ferrocyanide solution(0.1M K4Fe(CN)6 x H2O) 1 drop Potassium thiocyanate solution(0.1M KSCN) Procedure: Place 6 test tubes in a test tube
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1. CO2 2. 3. 4. 5. Fe2O3 6. 7. 8. 9. AgCl 10. 11. 12. 13. Ca3(PO4)2 14. 15. 16. 17. W3(PO3)5 18. 19. 20. 21. Fe(C2H3O2)2 22. 23. 24. 25. Calcium Carbonate 26. 27. 28. 29. Lead IV Sulfate 30. Lead IV Sulfite 31. 32. 33. 34. Lead IV Sulfide 35. 36. 37. 38. Lead II sulfate 39. 40. 41. 42. Lead II Sulfite 43. 44. 45. 46. Lead II Sulfide 47. 48. 49. 50. Copper I Sulfide 51. 52. 53. 54. Copper II Sulfite
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PORTLAND CEMENT Chemical composition. Portland Cement is made up of four main compounds: tricalcium silicate (3CaOSiO2)‚ dicalcium silicate (2CaOSiO2)‚ tricalcium aluminate (3CaOAl2O3)‚ and a tetra-calcium aluminoferrite (4CaO Al2O3Fe2O3). In an abbreviated notation differing from the normal atomic symbols‚ these compounds are designated as C3S‚ C2S‚ C3A‚ and C4AF‚ where C stands for calcium oxide (lime)‚ S for silica‚ A for alumina‚ and F for iron oxide. Small amounts of uncombined
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The History of Paint Pigments Chem 111-404 April 24‚ 2013 Introduction: This report expresses five different pigments that were formed during chemical reactions. Three out of the total five reactions went through a metathesis‚ or double-replacment reaction. A metathesis reaction can be defined as “a chemical reaction in which an element or radical in one compound exchanges places with another element or radical in another compound.” (Webster). The other two pigments underwent a neutralization
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diphenylamine reagent. Soil inoculations of ammonium sulphate and nitrite broths were incubated at room temperature for 7 days and 14 days. Incubation Period Broth Type Nessler’s Reagent Trommsdorf’s Reagent Diphenylamine Reagent 7 Days Ammonium Sulfate Broth Colorless- ammonia not present Presence of blue-black color. Nitrite production. N/A*
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Aim: To test the effect of decay in processed foods vs. non-processed foods Hypothesis: The processed foods will last longer than the non-processed foods because they contain more preservatives and artificial ingredients. Background Information: Preservatives are often added to food to prevent their spoilage‚ or to retain their nutritional value and/or flavor for a longer period. The basic approach is to eliminate microorganisms from the food and prevent their regrowth. This is achieved by
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of May 6. During the eruption in the month of April‚ particles were also injected above 8 km 5 but did not contain a large concentration of SO2 1. From a diagnose by CAM‚ only 3% of ash burdens global mean for 2010 and 0.4% of the global mean of sulfate during 2010 was located above the tropopause 1. By looking at figure x‚ two eruptions are shown in the plot 1. One at which the volcanic activity starts and has a high concentration of ash particles where another starts at the end of April and has
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Support Material Exemplar Starter Pages GCE Chemistry B (Salters) OCR Advanced GCE in Chemistry B (Salters): H435 Unit: F336 Chemistry Individual Investigation This Support Material booklet is designed to accompany the OCR Advanced GCE specification in Chemistry B (Salters) for teaching from September 2008. Contents Contents 2 Support Materials 3 Choice of investigation topic 4 Health and Safety 33 Other forms of support 35 Support Materials These support materials should
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The Displacement Reactions Purpose: to see how displacement reaction works with different chemicals and what chemical has more reactivity series then other Hypothesis: Iron + Copper Sulfate: Iron will displace copper because it is more reactive and it is going to end up as Iron Sulphide + Copper Copper + Silver Nitrate: Copper will displace Silver because it is more reactive and it is going to end up as Copper Nitride + Magnesium + Copper oxide: Magnesium will displace Copper because it
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