"Bromine and bromide" Essays and Research Papers

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    Notes of Halo Alkanes

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    163 CHAPTER 13 HYDROCARBON  Hydrocarbons are composed of Carbon and hydrogen.  The important fuels like Petrol‚ kerosene‚ coal gas‚ CNG‚ LPG etc. are all hydrocarbons or their mixture. Sources: Petroleum and natural gas are the major sources of aliphatic hydrocarbon while coal is an important source of aromatic hydrocarbons. The oil trapped inside the rocks is known as petroleum. PETRA – ROCK‚ OLEUM – OIL. The oil in the petroleum field is covered with a gaseous mixture known as natural

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    Chemistry Equipment Symbols 1. Test Tube 2. Boiling Tube 3. Beaker 4. Conical Flask 5. Test Tube Holder/ Tongs /Clamp Stand 6. Measuring/Graduating 7. Funnel 8. Pipette Cylinder 9. Spatula 10. Tripod 11. Bunsen Burner 12. Glass Bulb 13. Burette 16. Condenser Pipette Changes of State Filtering Solutions 03-Nov

    Free Periodic table Atom Chemical element

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    Vitamin C

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    CHEMISTRY 221 LABORATORY�QUANTITATIVE ANALYSIS EXPERIMENT:  DETERMINATION OF ASCORBIC ACID IN VITAMIN C TABLETS THEORY: Ascorbic acid‚ C6H8O6‚ MM =  176.13‚ can be oxidized to form dehydroascorbic acid by bromine via the following reaction: The bromine or iodine used in the titration is generated by adding an excess amount of KBr or KI to an acidified solution of the sample according to the following reaction:   BrO3-  +   5 Br-   +   6 H+    3 Br2  +   3 H2O IO3-  +   5 I-   +   6 H+   

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    Mcq Std 12 Chemistry

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    L-6 MCQ (A) MCQs of the Textual Exercise 1) In haloalkane _________ bond is formed between carbon and halogen. (a) Ionic (b) van der Waals (c) Covalent (d) hydrogen 2) In haloarene compounds‚ halogen combines with carbon having which hybridization? (a) sp2 (b) sp3 (c) sp (d)dsp2 3) In haloalkane‚ carbon in C-X bond possesses which partial electric charge? (a) Charge less (b) positive (c) negative (d) anionic 4) Which of the following bonds is the strongest?

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    UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *4308315385* CHEMISTRY Paper 2 Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name in the spaces at the top of this page. Write in dark blue or black pen. You may need to use a pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or correction

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    Chemistry notes form4

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    ONE-SCHOOL.NET Short Notes: Form 5 Chemistry Rate or Reaction Calculation Rate of Reaction (Average Rate) Rates of reaction = Quantity change of reactants/products Total time for the reaction If the quantity change is immeasurable Rates of reaction = 1 Total time for the reaction Find the Rate From a Graph Average Rate Rates At an Instant The rate of reaction is equal to the slope of the graph The rate of reaction at an instant‚ t‚ is equal to the of quantity against

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    Ozone Depletion

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    destruction of the stratospheric ozone is affected (Dobson‚ 2005). Despite this‚ an5thropogewnic causes are taken as the main causes of the depletion at the moment. It is believed that the natural phenomenon causes a temporary destruction but Chlorine and Bromine released as CFCs have more effects. These Chlorofluorocarbons cause effects that cannot be reversed they cannot mix with rain drops or be destroyed by other chemicals. Chlorofluorocarbons can survive in the air for 20 to 120 years causing more destruction

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    this paper I will discuss the evolution of the opalotype with it ’s emergence from the miniature to its popularity as a framed portrait. I will talk about the material technology and development opalotype production. The chemistry of the gelatino-bromide emulsion technique will be examined as this is the most commonly represented in opalotype in Australian collections (Egunnike‚ 2007 p144). Finally‚ the types of degradation that occur because of the materiality of opalotypes will be discussed.

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    Formal Report

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    Alkyl Halides Alkyl halides are a class of compounds where a halogen atom or atoms are bound to an sp3 orbital of an alkyl group. CHCl3 (Chloroform: organic solvent) CF2Cl2 (Freon-12: refrigerant CFC) CF3CHClBr (Halothane: anesthetic) Halogen atoms are more electronegative than carbon atoms‚ and so the C-Hal bond is polarized. H H μ C + C-l δ δ H The C-X bond is polarized in such a way that there is partial positive charge on the carbon and partial negative charge on the halogen. Dipole moment

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    Chemistry Halide Ions

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    traced to be beneficial to humans in the prevention of tooth decay. Sodium chloride is added to many of our foods to increase flavor. Sodium chloride is important for many life processes‚ but too much intake is linked to high blood pressure. Sodium bromide is distributed throughout body tissues. Sodium iodine controls cell growth. The principal oxidation number of the halogens is -1. All halogens‚ except fluorine have other oxidation numbers. In this experiment the production of recognizable precipitates

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