This reaction involves the oxidation of iodide ions to iodine molecules which are soluble in water and are visible as a pale brown clear solution. The formation of the iodine can easily be detected because all other species in the reaction mixture are colourless. The addition of starch to the reaction mixture further enhances the colour change by forming a dark blue-black complex with the iodine. The overall ionic equation is: (the spectator ions K+ have been left out to see the electron transfer
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Testing the Reactivity of Metals Aim: To prove the arrangements of the metals (Na‚ Ca‚ Mg‚ Al‚ Zn‚ Fe‚ Sn‚ Pb‚ Cu) according to the reactivity series. Background Information: By using various experiment‚ the reactivity of the metals can be deduced by the observation of the reaction. Hypothesis: Metals with low ionisation energy will lose their their electron more easily providing a more vicious and obvious result‚ as compared to the metals with higher ionisation energy‚ as the metals with lower
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Lab Experiment # 11 The common ion effect in dissolution and precipitation Equilibria Introduction: Dissolution and precipitation reactions are very important chemical reactions because it is applied to many aspects of the industries in medicine‚ food‚ water etc. The objectives of this laboratory experiment is to become familiar with dissolution and precipitation equilibria‚ develop a lab technique suitable for the determination of the solubility for a sparingly soluble salt‚ Ba(NO3)2 (s) at room
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Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction Unknown Letter: B 23 April 2013 Academic Integrity Statement: “Experimental data may be collected with other students in organic chemistry labs. However I understand that sharing information required for a lab report (including but not limited to word processing or spreadsheet files‚ calculations‚ graphs‚ conclusions and additional problems at the end of the lab report) with other students is a violation of the University
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Title: Relativities of Alkyl Halides in Nucleophilic Substitution Reactions Introduction: The purpose of this lab was to perform a comparison of relative reactivities of various alkyl halides with two different reagents‚ sodium iodine in acetone and silver nitrate in ethanol. (Below are the reaction equations). We used different substrates‚ which were primary‚ secondary‚ and tertiary. These substrates included 2-bromobutane‚ 2-bromo-2-methylpropane‚ 1-bromobutane ∞-Bromotoluene‚ bromobenzene
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Review: Csaba Szalay‚ Ildikó Ábrahám‚ Szilárd Papp‚ Gábor Takács‚ Balázs Lukáts Ágnes Gáti‚ and Zoltán Karádi‚ (2010). Taste reactivity deficit in anorexia nervosa. Psychiatry and Clinical Neurosciences‚ 64: 403–407. Basis for the research question in past research and theory: Hypogeusia‚ the reduced ability to taste‚ and dysgeusia‚ the distortion of the sense of taste‚ mainly involving the sour‚ bitter and salty tastes‚ have already been demonstrated in anorexia nervosa patients in literature
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The Nervous System: Ion Channels 1. What structures in the cell membrane function as ion channels? Intergral Proteins 2. Ion channels are selective for specific ions. What three characteristics of the ions are important for this selectivity? a. Charge on ion (+ or -) b.Size c. The amount of water the Ion attracts 3. Channels can be classified as either gated or nongated channels. A sodium channel that is always open would be classified as a/an non-gated channel. 4. Would
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3/4/14 Determining The Formula of a Complex Ion Luqman Khan Contents: Aim………………………………………………………………………………………………………………….……2 Results……………………………………………………………………………………….………………………2-6 - Raw Data………………………….………….……………………………………………………..…..2 - Qualitative Analysis………………………………………………………………………………….2 - Data Processing……………………………..……………………………………………………..3-5 - Graphical Results……………………………..…………………………………………….…….5-6 Conclusion…………………………………………………………………………………………………………6-7 Evaluation……………………………………………………………………………………………………………
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Simulation Strategic Innovation Simulation: Back Bay Battery (v2) Clayton M. Christensen; Willy Shih Added on Sep 22‚ 2014‚ Purchased on Sep 22‚ 2014‚ Expires on Sep 22‚ 2015 Hide Details Product #:7015-HTM-ENGFormat: English Web Based HTML In this single-player simulation‚ students play the role of a business unit manager at a battery company facing the classic Innovator’s Dilemma. Students have to manage R&D investment tradeoffs between the unit’s existing battery technologies
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Megan Adkins-Blanch 11/10/14 TA: David Stephens CHE 3652-003 Aldol Condensation: 4-methoxychalcone Abstract: To synthesize 4-methyoxychalcone. Reaction Mechanism: Table: Compound Molecular Weight (g/mol) Density (g/mL) Boiling Point (°C) Melting Point (°C) Amount used (g‚ mL‚ etc.) Acetophenone 120.16 1.03 201.7 19.7 1 ml 95% ethanol 46.07 0.8 79 -114 50% NaOH 40.2 1.53 140 12 Anisaldehyde 136.16 1.12 248 -1 1 ml Structures: Acetophenone: 95% ethanol: 50% NaOH: Anisaldehyde: MSDS:
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