activation reagents such as Hydrochloric acid‚ Zinc Chloride and Phosphoric Acid were used. A single burn and double burn process was carried out for each method. The activated carbon obtained was compared in terms of absorption capacity‚ bulk density‚ BET specific surface area and pore volume. The best results were yielded for activated carbon prepared using phosphoric acid with the single burn technique. Keywords: Activated carbon‚ Adsorption‚ Hydrochloric acid‚ Phosphoric acid‚ Zinc chloride I. Introduction
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Making an Activity Series of Metals using different Solutions Purpose/ Hypothesis: The purpose of this lab was to clearly identify the reactivity of magnesium‚ zinc and copper. The metals reactivity will be exemplified as it will be tested with different solutions such as zinc sulfate (ZnSO4)‚ copper sulfate (CuSO4)‚ hydrochloric acid (HCL)‚ magnesium sulfate (Mg2SO4)‚ iron (II) sulfate (FeSO4) and tin (II) chloride (SnCl2). This will allow us in creating an activity series to visually see the reactivity
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reactions work and what products they may form. Materials & Procedure Materials: * Wood Splints - Copper Sulfate * Sodium Sulfate - Copper Wire * Barium Chloride - 6% Hydrogen Peroxide * Mossy Zinc - Copper Sulfate Pentahydrate * Hydrochloric Acid - Iron Filings * Manganese Dioxide Procedure: Reaction A Place a scoop of copper (II) sulfate pentahydrate crystals in a clean‚ dry test tube. Use a test tube holder to position the test tube over a burner
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Litmus paper • Pipets • Spatula • Test tubes Materials: Ammonium carbonate‚ 0.5g Calcium carbonate‚ 0.5g Copper chloride solution‚ 4mL Hydrochloric acid‚ 4mL Magnesium ribbon‚ 2-4 cm strips Phenolphthalein indicator‚ 1 drop Sodium hydroxide solution‚ 1mL Sodium phosphate solution‚ 1mL Water Zinc‚ mossy‚ or zinc shot‚ 1-2 pieces Introduction: In this lab we will classify different chemical reactions. Classifying chemical reactions allows us to predict what chemical
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64 65 75 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton 24 96 25 31 115 32 119 33 122 34 128 35 127 36
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equations Part I: Reaction between zinc and iodine Watch the Video. http://www.youtube.com/watch?v=xT9V7Y1iKYc Observations: Describe what happened when the water was added. A reaction happened and the iodine exploded into a purple gas Questions and conclusions: 1. Balance the equation‚ if necessary‚ for the reaction between zinc and iodine. Zn + I2 ZnI2 It is balanced 2. Classify the reaction that occurred between the zinc and iodine. redox 3. What evidence
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experiment conducted‚ the three metals‚ magnesium‚ zinc and copper each had to undergo displacement reactions and reactions with water‚ oxygen and dilute acids‚ to arrange them in the order of their reactivity. Generally‚ the more easily a metal burns in air to form an oxide‚ the higher up it is in the reactivity series. It was observed that both zinc and magnesium burned in air to form their corresponding metal oxides (magnesium oxide and zinc oxide) but copper did not undergo any such reaction
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calcium sulfide. Δ Ca (s) + S (s) → CaS (s) b. Hydrogen gas reacts with fluorine gas to produce hydrogen fluoride gas. H2 (g) + F2 (g) → 2 HF(g) c. Solid aluminum metal reacts with aqueous zinc chloride to produce solid zinc metal and aluminum chloride. (Check the Solubility Rules to determine the phase of matter of aluminum chloride.) 2 Al (s) + 3 ZnCl2 (aq) → 2 Zn (s) + 2 AlCl3 (aq) 4. Translate the following chemical equations
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reactivity series. Materials : * Hydrochloric acid (1M) * Metals (sodium‚ calcium‚ magnesium‚ aluminium‚ zinc‚ iron‚ tin‚ lead‚ copper) * 9 test tubes * Test tube rack * Test tube holder * Retort stand * Bunsen burner * Beaker * Tripod * Heat proof board * Wire mesh * Water Methods: Acid and Metal * Using a carving knife/cutter‚ cut out a piece of metal weighing 1g. * In each test tube‚ pour in 2ml of Hydrochloric acid per test tube. * Add
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rusting No reaction Table 2: Observations Results: HCl(Solution used) Metal Word Equation Balanced Equation Cu NR NR Mg Magnesium + Hydrochloric Acid ---> Hydrogen + Magnesium Chloride Mg(s) + 2HCl(aq) ---> H2(g) + MgCl2(s) Sn NR NR Zn NR NR Fe NR NR Steel (FeAl) Iron (III) + Hydrochloric Acid ---> Hydrogen + Iron (III) Chloride 2Fe(s) + 6HCl(aq) ---> 3H2(g) + 2FeCl3(s)
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