Citric acid reacts rapidly with iron‚ but is not itself the rusting of iron. The water in the lemon juice helps iron rust‚ but in the presence of air. The same happens when you open bottle of Coca-Cola‚ including citric acid‚ phosphoric acid‚ carbonic acid and other things in the fall for the taste. Citric acid has an advantage over some other acids‚ because it is less corrosive‚ not as dangerous to the environment‚ while remaining efficient‚ cheap (but not as cheap as the old battery acid).
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the crystal structures of iron. Substitutional alloyIt is formed when the solute atoms take up positions of solvent atoms in the crystal lattice. If the two metal atoms are about the same size and have the same crystallographic structure‚ then the two metals may form a solid solution. Brass‚ an alloy composed of copper and zinc‚ is an example of a substitutional alloy. Alloys have different applications depending on their properties. The various types of steel and iron are all alloys classifiable
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temperature. A. Creep B. Thermal Fatigue C. Cyclic Cracking D. Stress Corrosion Cracking 4. General or localized corrosion of carbon steels and other metals caused by dissolved salts‚ gases‚ organic compounds or microbiological activities is called . A. Flue Gas Corrosion B. Atmospheric Corrosion C. Cooling Water Corrosion D. None of the Above E. All of the Above 5. 5. What structure is 410 stainless steel?
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of common metals Metal | Uses | Iron and Steel (an alloy with <2% carbon)Good tensile strength‚ cheap‚ rusts (corrodes) | - Railways‚ bridges‚ buildings- motor cars bodies‚ ships and trains- Engine blocks‚ fire hydrants‚ drainage pipes‚ and gates- Reinforcing in concrete (roads‚ bridges‚ high rise buildings)- Refrigerators‚ washing machines and other domestic appliances- Heavy machinery in industry- Containers (drums and tin cans)- pipes‚ nails‚ nuts and bolts | Aluminium - low density
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meet the above functional requirements the material used for manufacturing the product should contain many properties. They are‚ the material should contain high strength‚ modulus of elasticity‚ wear resistance‚ ability to withstand vibrations‚ and corrosion resistance. High strength is mostly concerned in diesel engines because of their high compression ratios compared with petrol engines. In diesel engine its compression ratios are normally 17:1 or greater‚ but in petrol engine it is nearly 10:1. The
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Production and Properties of Metals Mr J E Chuter‚ Cert Ed 2012 En No 20100292 Introduction I have decided to produce a project based on the production and properties of metals‚ as although I have worked as a welder for over 30 years‚ and a welding teacher for the last 2 years on apart-time basis‚ I felt I didn’t know enough information on the material that I work on‚ on a daily
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Advantages: Sulfamic acid is the fastest de-scaler - It dissociates into hydroxonium ions more readily in aqueous solution than the others‚ therefore giving a greater concentration of atoms that are able to react with the calcium in lime scale. It is safe to use because it does not produce chlorine gas [5]‚ which can be toxic. Sulfamic acid also has a low volatility. Disadvantages: Sulfamic Acid can be an irritant to eyes or skin and is the most expensive of the de-scalers. Q2) How these de-scalers
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of Al2O3 (called a passivation layer) that protects the foil from further corrosion.[2]Different oxides of the same element are distinguished by Roman numerals denoting their oxidation number‚ e.g. iron(II) oxide versus iron(III) oxide. 1 Formation 2 Structure 2.1 Molecular oxides 3 Reactivity 3.1 Reduction 3.2 Hydrolysis 4 Nomenclature and formulas 5 Examples of oxides 6 See also 7 References Formation Main article: corrosion Due to its electronegativity‚ oxygen forms stable chemical bonds with almost
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I. Title: Iron-Copper (II) Chloride Reaction II. Purpose: The purpose of this lab is to see how iron reacts with a copper (II) chloride solution. III. Equipment and Reagents Scoop copper (II) chloride (CuCl2) Beaker Iron (Fe) Wash Bottle water (H2O) Scale Hydrogen chloride (M HCl) Filter Paper IV. Procedure: 1. Obtain a clean‚ dry 250 mL beaker. 2. See teacher to obtain a scoop of CuCl2 in the beaker. 3. Add approximately 50 mL of tap water to
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known as the atomic mass. In this experiment‚ you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride‚ determine the number of moles of iron used up in the reaction of iron and copper (II) chloride‚ determine the ratio of moles of iron to moles of copper‚ and determine the number of atoms and formula units involved
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