By simply comparing the reactions that occurred when each metal was added to HCl‚ we are able to rank the reactions. Metals that reacted with HCl to produce hydrogen gas would be considered more active that those that exhibited no reaction. Therefore‚ the metal that reacted the most vigorously in acid would be the most reactive metal. In addition‚ the metal that
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solution of EDTA by titration against a standard solution made from calcium carbonate‚ CaCO3. Procedure: A 50-mL buret‚ a 250-mL volumetric flask‚ and 25- and 50-mL pipets were obtained from stockroom. The 0.5 g of calcium carbonate was weighted in a small 50-mL beaker. Approximately 0.4 g of the carbonate was transferred to a 250-mL beaker. 25 mL of distilled water was poured to the large beaker and 40 drops of 6 M HCl were added. Then‚ solution was heated until it just begins to boil. After boiling
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NO2-Presence of nitrates of lead and bariumPresence of Zn2+Presence of NH4+Absence of nitrate‚ nitrite‚ zinc and ammonium ions | 3 | Solubility: a) In water b) In dil. HCl | SolubleSoluble in dil. HCl but insoluble in water | Water soluble saltsPresence of CO32- | 4 | Flame test:A paste of the salt was made with few drops of con. HCl and was introduced into the non-luminous flame. | (i)Brick red colour is imparted to the flame(ii) Crimson red(iii) Apple green(iv) Bluish green(v)No characteristic
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Patrica E. Sauza‚ Jelica D. Estacio Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines Results and Discussion Eight Styrofoam ball calorimeters were calibrated. Five milliliters of 1M hydrochloric acid (HCl) was reacted with 10 ml of 1M sodium hydroxide (NaOH) in each calorimeter. The temperature before and after the reaction were recorded; the change in temperature (∆T) was calculated by subtracting the initial temperature from the final temperature.
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UNITS OF CONCENTRATION There are a number of different ways of expressing solute concentration that are commonly used. Some of these are listed below. Molarity‚ M = moles solute/liter of solution Normality‚ N = equivalents of solute/liter of solution Weight %‚ Wt % = (mass of solute/mass of solution) x 100% Parts per million‚ ppm = (mass of solute/mass of solution) x 106 Mass per volume‚ mg/L = mass of solute/liter of solution molality‚ m = moles of solute/mass of solvent mole fraction‚ χ = moles
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Edexel IGCSE Chemistry Revision Notes IGCSE Chemistry Triple Award Revision Guide Topic Introduction to chemistry Atomic Structure Structure and Bonding – Ionic Bonding Structure and Bonding – Covalent and Metallic Bonding Organic Chemistry - Alkanes Organic Chemistry – Alkenes / Addition Polymerisation Organic Chemistry – Alcohols / Condensation Polymerisation Calculations Periodic Table Reactivity Series and Metal Extraction Electrolysis Energetics Acids‚ Bases‚ Salts and Neutralisation Preparing
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This calculation was used to determine volume of 6 molarity KOH and 6 molarity HCl needed to synthesize 1 gram of KCl: These chemicals combined in the acid-base reaction: KOH (aq) + HCl (aq) KCl (aq) +H2O (l) The respective volumes of each solution were measured out in graduated cylinders and combined in a large beaker (to increase surface area for evaporation). With added heat
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| UV‚ IR‚ NMR‚ MS | (verify) (what is: /?) Except where noted otherwise‚ data are given for materials in their standard state (at 25 °C‚ 100 kPa) | Infobox references | Hydrochloric acid is a clear‚ colourless solution of hydrogen chloride (HCl) in water. It is a highly corrosive‚ strong mineral acid with many industrial uses. Hydrochloric acid is found naturally in gastric acid. Historically called muriatic acid‚ and spirits of salt‚ hydrochloric acid was produced from vitriol (sulfuric
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g sample of ethanol is burned‚ how much energy is released as heat? 3. When 0.157 mole NH3 is reacted with excess HCl‚ 6.91 kJ of energy is released as heat. What is the H for this reaction per mole of NH3 consumed? 4. Calculate the H for the following reactions using Hf a. Fe2O3 (s) + 3CO(g) 3CO2 (g) + 2 Fe(s) b. CaO(s) + CO2 (g) CaCO3 (s) 5. Calculate the H for the reaction: ClF + F2 ClF3 Given: 2ClF + O2 Cl2O + F2O H= 167.4 kJ 2ClF3 +
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Designation: C 114 – 07 Standard Test Methods for Chemical Analysis of Hydraulic Cement1 This standard is issued under the fixed designation C 114; the number immediately following the designation indicates the year of original adoption or‚ in the case of revision‚ the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. 1. Scope* 1.1 These test methods cover
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