"Solubility lab" Essays and Research Papers

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    Unit 2 Online Simulation-II (50 points) VLab: Precipitation Reactions: Data & Observations Navigate to: http://www.sascurriculumpathways.com/portal/#/search?searchString=&searchSubject=3&searchCategory=20 Enter the following username: job5circle (No password required) Enter 867 GO There are thirty-five combinations of aqueous solutions for you to investigate. (Note Table 1 on the Data Sheet.) Some of these combinations will produce precipitates; others will not. Step-by-step

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    aqueous solutions share the same chemical and physical characteristics‚ which makes it very difficult to identify without conducting various chemical tests. For determining the identity of unknown chemical solutions‚ it is important to understand the solubility and insolubility

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    Experiment 2 – Identification of Inorganic Solids Jesse Galina CHM 101 Lab Monday October 1‚ 2012 Unknown Solid – 2 Identifying my cation was rather easy because of the color of the powder when it was first given to me. It was pinkish/slight red when solid and when it was grounded up even further. This observation ruled out every cation except for some hydrated Co (II) salts. After being dissolved in water‚ the solution turned pink which agrees with the statement that the cation was Co

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    solution‚ and concentration of AgNO3. Once the solid was large enough‚ it could be washed‚ filtered‚ and weighed. The percentage of chloride present was found to be 24.73695223 (±0.00000006) %. Introduction The purpose of this lab was to determine the percentage of chloride in an unknown soluble salt sample through a gravimetric method known as precipitation gravimetry. The objective was to accurately and precisely convert the unknown sample containing the chloride analyte to

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    General Conclusion

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    concepts of solubility and conductivity of a substance were studied as well in this experiment helping us understand how the various molecules and its ions react in solvents. An example of this process is when calcium chloride dissolved in water. The polar water molecules attracted the oppositely charged Ca2+ and Cl- ions as calcium chloride is a polar molecule as well. The ions brake apart as the water attraction is greater than the ionic bond within the calcium chloride molecule. Solubility is also

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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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    Vit C

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    Experiment  3    Objectives    Separation by Solvent Extraction  To separate a mixture consisting of a carboxylic acid and a neutral compound by using  solvent extraction techniques.    Introduction    Frequently‚  organic  chemists  must  separate  an  organic  compound  from  a  mixture  of  compounds‚  often  derived  from  natural  sources  or  products  of  synthetic  reactions.  One  technique used to separate the mixture compounds is called extraction. Extraction is a process 

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    Selective precipitation of the Barium Magnesium Group Chem 112-004 Abstract The purpose of this experiment is to separate and identify the cations of Ba+‚Sr2+‚Ca2+‚ Mg2+ and NH4+ using differences in solubility and confirming test to identify the unknown solution used in this experiment. In this experiment the methodology used by the group is to perform the tests for both the unknown and the cations (Ba+‚Sr2+‚Ca2+‚ Mg2+ and NH4+) using the known as a control for comparison and identification

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    Objective: To test the ten compounds found in the physical data table that follows‚ and observe them by categorizing the reactions as Sn1 and SN2. Physical data: Compound M.W. (g/mol) Melting Point (C°) Boiling Point (C°) Density (g/mL) Solubility Safety Considerations 2-chlorobutane 92.57 -140 68 0.87 very slightly soluble in cold water Irritant with skin‚ lung‚ and eyes. 2-bromobutane 137.03 -112 91.2 1.25 Irritant with skin‚ lung‚ and eyes. 1-chlorobutane 92.57 -123 79 0.88 insoluble

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    it and lit it up; after recording the water temperature. Then I recorded the mass of the ashes and I recorded the temperature one last time. I repeated the process for the other test foods as well. Results: See table below Discussion: This lab helped me learn how to measure the amount of energy contained within each food item. Questions: A. Peanut B. Considerably well C. Single replacement reaction D. Carbon dioxide and water E. Into the air F. 1. 1400 calories 2. 10.69kJ/gm 3

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