EXPERIMENT 4 TITLE Complex Formation and Precipitation. INTRODUCTION Precipitation is the formation of a solid in a solution as the result of either a chemical reaction‚ or supersaturating a solution with a salt resulting in solid material collecting on the bottom of the beaker (Housecroft & Constable‚ 2006). When the solution has been supersaturated by a compound and no more material can be supported by the solution‚ it considered as precipitate. Commonly‚ the solid will fall out of the
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Yuri Anthony D. Sucgang BMLS-IA Electrophoresis Machine Gel Electrophoresis Apparatus(Aragose Gel) Electrophoresis is the motion of dispersed particles relative to a fluid under the influence of a spatially uniform electric field. Gel electrophoresis is a laboratory procedure used to separate biological molecules with an electrical current. In this lesson‚ we’ll review how agarose gel electrophoresis works and introduce the equipment necessary to perform an electrophoresis experiment.
Free Chromatography Thin layer chromatography Hydrochloric acid
Production of materials 1B – identify the industrial source of ethylene from the cracking of some of the fractions from the refining of petroleum Industrial source of ethylene (ethene) * Obtained from Crude oil – fractional distillation * Heated to high temps * Components vaporise and rise up tower where condense and collect * Lower the boiling point‚ higher up tower compound rises * Separates crude oil into fraction each with different boiling range - Catalytic Cracking
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do you mean by precipitation reaction? Give its one example. Q. 14. What is redox reactions? Give its two examples? Q. 15. Write the balanced chemical equation of the following and identify the type of reaction in each case: i. Potassium bromide(aq) = barium iodide(aq) -> potassium iodide(aq) = bariumbromide(s) ii. Zinc carbonate(s) -> zinc oxide(s) = carbon dioxide(g) iii. Magnesium(s) = hydrochloric acid(aq) -> magnesium chloride(aq) = hydrogen(g) Q. 16. Wrte an activity to
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environment have resulted in numerous ripple effects including the acidification of the ocean. The ocean is a complex mixture of chemicals primarily consisting of water‚ sodium chloride and trace elements of magnesium‚ sulfur‚ potassium‚ calcium and bromine. Calcium is the most important constituent as it is important in sustaining marine life and plays a role in the chemical balance of the ocean. The acidification of the ocean‚ precipitated by global warming‚ is causing a change in the chemical interactions
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Goals The main goal of this project is to learn how to identify the properties of an unknown ionic compound. In order to do this successfully the group has to use a variety of methods and run several tests on the unknown compound. By doing this the group will be able to identify the different chemical and physical properties of the compound that will help obtain the identity of the specific compound given. The group will devise two syntheses of the compound‚ and compare them for cost effectiveness
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Structure of Matter | | 1. | An element consists of three isotopes in the relative abundance given below. What is the atomic mass of this element? | | 30.00% = 40.00 amu50.00% = 41.00 amu20.00% = 42.00 amu | | (A) | 40.90 | | (B) | 41.00 | | (C) | 41.90 | | (D) | 42.20 | | (E) | 42.90 | | | 2. | The total number of electrons that can be accommodated in the fourth principal energy level is _____ | | (A) | 2 | | (B) | 8 | | (C) | 18 | | (D) | 32 | | (E)
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Sample A‚ to see if it complies with the monograph in the British Pharmacopoeia (BP) for the identification of acetaminophen‚ the limit test for p-aminophenol and the assay for acetaminophen. Procedure Identification for Acetaminophen Potassium bromide (KBr) disc technique was used to prepare the sample for the infrared absorption spectrophotometry. The agate mortar and pestle were cleaned with absolute ethanol using lint free paper. 5 micro-spatula of KBr and 1 micro-spatula of Sample A were mixed
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into it and placing the gel comb at the end of the tray. As soon as the argose solution was cool enough to handle‚ our TA added ethium bromibe to our solution. Ethium bromide is useful as a fluorescent tag (nucleic acid stain) for electrophoresis it binds to DNA and when exposed to UV light it glows bright orange. After the ethium bromide and the agrose gel were combined‚ the new mixture was poured into the gel tray and allowed to solidify. Once the gel became solid‚ it was carefully removed along with
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separate these two compounds column chromatography can be used to exploit the weaker polarity of 4-bromonitrobenzene. 4-Bromonitrobenzene has a weaker polarity due to its nitro group being in a para position thus lessening the electronegative effects of bromine on the other side of the ring by pulling electron density toward the ring1. Column
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