"Linkage isomerism in cobalt iii complexes" Essays and Research Papers

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    Chemistry Lab

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    SHIFT HCl (Step 3) HCl (Step 4) NaOH (Step 5) NaOH (Step 6) Table 2 Equilibrium Involving Thiocyanatoiron (III) Ion REAGENT ADDED STRESS (ION ADDED) OBERSERVATION DIRECRTION OF EQUILIBRIUM SHIFT KCl (test tube B) Fe(NO3)3 (test tube C) KSCN (test tube D) NaOH (test tube E) Table 3 Equilibrium Involving Cobalt (II) Complexes STRESS OBSERVATION DIRECTION OF EQUILIBRIUM SHIFT Step 3 Step 4 Step 5 Table 4 Equilibrium Involving Chromate

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    basic concepts questions

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    ....... mol [2] (iii) Calculate the percentage yield. Quote your answer to three significant figures. .................................................. % [1] [Total 4 marks] 3. But-1-ene is just one isomer with the molecular formula C4H8. Using C4H8 as your example‚ describe and explain what is meant by structural isomerism and cis-trans isomerism. Include diagrams in your answer. In your answer you should make clear how each type of isomerism is related to structural

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    Liesegang Rings Experiment

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    of producing the rings. • To investigate the effect of passing a D.C. current through the gel solution on the production of Liesegang rings. Main findings • The lead nitrate/potassium iodide and cobalt chloride/ammonium hydroxide reactions both formed bifurcations. The cobalt chloride/ammonium hydroxide reaction was then investigated under different conditions until discernable Liesegang rings had formed. • It was found that the rate of diffusion of ions was increased when a D

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    temperature were observed in this experiment. Part 1: Cobalt Complexes Table 1 shows the color change of the cobalt chloride solutions as water‚ different concentrations of hydrochloric acid‚ and sodium chloride were added as well as the number of drops that caused the color change. Color of cobalt chloride in ethanol: Violet Color of cobalt chloride in water: Red Medicine Dropper Calibration: 1 mL = 16 drops Table 1. Cobalt Complexes Solution Color Change # of drops mL CoCl2 in EtOH

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    Right | Part II: Equilibrium Involving Thiocyanatoiron (III) Ion Table 2 Reagent Added | Stress (Ion Added) | Spectator Ion | Observation | Direction of Equilibrium Shift | KCl | None | K⁺‚ Cl⁻ | No Change | No Change | Fe(NO₃)₃ | Fe³⁺ | NO₃⁻ | Solution Darkens | Right | KSCN | SCN⁻ | K⁺ | Solution Darkens | Right | NaOH | OH⁻ | Na⁺ | Solution Lightens ppt. | Left | Part III: Equilibrium Involving Cobalt (II) Complexes Table 3 | Stress | Colour Observation | Direction of

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    Equilibrium Labv4

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    INVESTIGATING EQUILIBRIUM EXPERIMENT Objectives 1. To recognize the macroscopic properties of three chemical systems at equilibrium. 2. To observe shifts in equilibrium concentrations as stresses are applied to the systems. 3. To explain observations by applying LeChatelier’s Principle. Materials 12 test tubes test tube rack 2 -100mL beakers beaker tongs safety glasses stand ring clamp wire gauze bunsen burner

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    CHEMISTRY Time: 3 hr-15 min. Batch-02 Max Marks: 70 Instructions: i) ii) The question paper has four parts‚ A‚ B‚ C and D. All parts are compulsory Part-A Carries 10 marks Part-B Carries 10 marks Part-C Carries 15 marks Part-D Carries 35 marks iii) Write balanced equations and draw diagrams wherever required (Use log tables and the simple commercial calculator if necessary (use of scientific calculator is not allowed) Part-A I. Answer all questions‚ 1. 2. 10 X 1=10 3. Define the term molality

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    The Importance of Education

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    UNIVERSITY OF THE GAMBIA LECTURE NOTES COURSE: PRINCIPLES OF CHEMISTRY II (ORGANIC CHEMISTRY) CODE: CHM 161 2ND SEMESTER SESSION: 2012/2013 LECTURER: ANTHONY F. ADJIVON UNIT 1 INTRODUCTION Organic chemistry started as the chemistry of life‚ when that was thought to be different from the chemistry in the laboratory. Then it became the chemistry of carbon compounds‚ especially those found in coal. Now it is both. It is the chemistry of the compounds of carbon along with other elements

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    F331 Revision

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    radiation none No change Lead sheet None 6. Half-life i. The time taken for half a radioactive isotope/substance to decay. ii. Not affected my temperature iii. Can be used to date archaeological artefacts made from living things Tracers i. Radioactive isotopes whose decay is monitored ii. Can be used to aid diagnosis‚ followed by a Geiger counter iii. An isotope should have a half-life which is neither too short or it will decay before tracing is complete. nor too long or it will persist for too long

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    Catalysis

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    Homo/hetero-genous/bio-catalysis: HOMOGENOUS: * catalyst and reagents are in the same phase * in solution – soluble and/or liquid reagents react in the liquid phase * Can be: organic molecules‚ transition metal complexes‚ inorganic salts‚ lanthanide complexes * Powers: * Efficiency of an homogeneous process * Fine tuning of activity with the choice of ligands * Greater selectivity (region‚ chemo selectivity) * Better potential for asymmetric catalysis * Better

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