Copper‚ Iron‚ Sodium‚ Cobalt‚ Nickel Anions used: Nitrate‚ Carbonate‚ Chloride‚ Hydroxide‚ Sulfate‚ Bicarbonate‚ Iodide‚ Phosphate Questions A - Compare your results with the solubility rules and/or solubility table in your chemistry text. B - Do your results agree with your expectations from the solubility rules/table? Yes‚ I feel like my results were comparable to the rules on the table in the chemistry text. C - Which anions generally form precipitates? What are exceptions?
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RECRYSTALLIZATION AND MELTING POINT DETERMINATION OF BENZOIC ACID ANSWERS TO QUESTIONS 1. How does the use of fluted filter paper hasten filtration? Why is it advisable to place a small piece of wire between the funnel and the mouth of the flask during hot filtration? Fluted filter paper is effective in preventing crystal formation in the filter paper. It is also often used in filtering hot saturated solution used during crystallization. One major advantage of a fluted filter is that it increases
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PREPARATION OF TIN TETRAIODIDE 09/06/2012 Introduction The objective of this project was to prepare tin tetraiodide through the following reaction: Sn+2I2∆SnI4 and to measure the melting point of tin tetraiodide. Tin tetraiodide was recrystallized after the synthesis. The percent yield and the theoretical yield of tin tetraiodide were calculated. Recrystallization is to further improve the purity of tin tetraiodide. The solvent is carefully chosen to be toluene in order to maximize the recovery
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throughout f. Henry’s Law An expression for calculating the solubility of a gas in a fluid based on temperature and partial pressure g. solution mixture of two or more substances h. Molarity concentration measured by the number of moles of solute per liter of solution. i. Osmosis The tendency of molecules of a solvent to pass through a semipermeable membrane from a less concentrated solution into a more concentrated solution j. Solubility the quantity of a particular substance that can dissolve
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Purpose The purpose of this experiment is to observe reactions of chemicals that can be found in consumer products. Through observation‚ students should be able to interpret the chemical reactions and determine some characteristics‚ such as pH and solubility. Method 1. Pipets containing chemicals will be opened using scissors to snip the end and each pipet will be placed in a well of a 24-well plate. The scissors must be washed between each pipet. 2. A 96-well plate will be placed onto a white sheet
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Ionic Reactions Results B - Do your results agree with your expectations from the solubility rules/table? Our results seemed to largely agree with the established solubility rules/table; however‚ a few reactions with the commonality of being mixed with Co(NO3)2 (cobalt nitrate) [reference Row A‚ Columns 2‚ 3‚ and 4] seemed to have such a pale pink tone that it was difficult to decide whether that could have been a precipitate or the lighting in the area where the experiment took place. Ultimately
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Dilutions Calculations (M1V1 = M2V2‚ careful with M2) * Solution Stoichiometry * volume-volume conversions * volume-mass conversions * Molecular interpretation of solubility * solubility rules * Precipitation Reactions * Determining reaction products * Following Solubility rules * Molecular Formula‚ Total ionic formula‚ net ionic formula * Acid-Base Reactions * Oxidation-Reduction reactions
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Introduction: The theory behind the extraction of a solution containing benzoic acid‚ cellulose‚ and methyl orange involves many components pertaining to the fundamental ideas of solubility and polarity. Using the concepts of like dissolving like and acid base reactions‚ a solution of organic acid (benzoic acid)‚ a water soluble compound cellulose‚ and an organic soluble compound methyl orange‚ can be separated and benzoic acid can be isolated by a method of extraction. At the fundamental
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soil. Pure substances are not only important to chemists in their studies of matter but also are vital in other areas of study such as medicine where those substances might be used as medications Crystallization is based on the principles of solubility: compounds (solutes) tend to be more soluble in hot liquids (solvents) than they are in cold liquids. If a saturated hot solution is allowed to cool‚ the solute is no longer soluble in the solvent and forms crystals of pure compound. Impurities
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dependent on the chemical and physical properties of the core material. There are many factors that affect the efficiency of encapsulation. This includes‚ solubility of polymer in solvent‚ solubility of organic solvent in water‚ concentration of polymer‚ ratio of dispersed phase to continuous phase‚ interaction between core material and polymer and solubility of core material in the continuous phase. Microencapsulation can be applied in industry‚ through the release of core material. The four main
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