after the Greek word “chloros” meaning “pale green”. Chlorine appears naturally in both the earth’s crust as well as in sea water. Though chlorine does not exist naturally as a gas‚ chlorine is obtained through a chemical reaction involving a sodium chloride and water mixture known as brine. When an electrical current is passed through the brine it reacts and breaks up the solution into chlorine‚ caustic soda and hydrogen gas. The reaction looks like this: 2NaCl + 2H2 ----- Cl2 + 2NaOH + H2. Not only
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of the deicer lab was to successfully conduct experiments to determine the usefulness of magnesium chloride as a deicer. To find how successful magnesium chloride is as a deicer‚ experiments were conducted to determine the freezing point depression‚ enthalpy of dissolution‚ the impact on the surrounding environment‚ and also the expenses of using magnesium chloride as a deicer. For magnesium chloride to be determined as a good deicer‚ the reaction with water needs to be exothermic so ice’s freezing
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Table of Observations Compound Flame Color Strontium Chloride strong dark orange red Strontium Nitrate bright orange Copper II Nitrate bright green Copper II Chloride strong light green Sodium Nitrate strong orange Sodium Chloride a soft orange Potassium Nitrate soft peach Potassium Chloride peach with orange outline
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Claim Evidence Reasoning What is your CLAIM? Sodium Bicarbonate and water make the bag cold. EVIDENCE to support your claim Sodium Bicarbonate and water make the bag noticeably cold. When you take calcium chloride‚ phenol red‚ and water the bag becomes hot. If you add Calcium chloride and sodium bicarbonate there will be no reaction. If you add Sodium Bicarbonate and Phenol red the bag will become cold. When you take Sodium Bicarbonate‚ Phenol red‚ and water the bag will become cold. Using
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observed on the example of nitritopentaamminecobalt(III) Chloride and nitropentaamminecobalt(III) Chloride. Their relative stability will be compared on standard conditions and the infrared spectroscopy of both the isomers will be obtained to analyze the characteristic absorption bands for the nitro and nitrito group. Yield for nitritopentamminecobalt(III) Chloride was obtained to be = 1.9221 g(73.24 %) and yield for nitropentamminecobalt(III) Chloride = 0.76 g(76 %) Introduction Linkage isomers may arise
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Extracting NaCl from Rock Salt and assessing its purity Aim The aim of this experiment was to obtain a pure product from a solution through the processes o extraction‚ filtering and evaporation. Introduction Extraction is used when trying to separate or purify a product. For an extraction to be successful the substance used to make the solvent should readily dissolve. The substance used in this practical was rock salt. The liquid used should not react with the substance that needs extracting
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methylene chloride versus pure compounds retention time as introduced to a Gas chromatograph. From this information‚ the identity of the compounds can be determined. GC delivery psi: 60 Carrier Gas 1: 3.5 kg/cm2 Carrier Gas 2: 0.75 kg/cm2 Porapak Q 80/100 6’X1/855 79434 10.21.88 Supelco Method We rinsed a separatory funnel with tap and then deionized water‚ then poured our unknown sample into the top (ensuring that the stopcock was closed). We rinsed the beaker with methylene chloride and poured
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A Typical Cold? by Brent J.F. Hill Part III—Your Explanation of Sam’s Condition Objectives and Issues 1. What type of disease is Sam suffering from? Cystic Fibrosis 2. What tissues and organs does this disease affect? Once you identify all the tissues and organs‚ briefly explain their respective dysfunction. Exocrine Glands – glands may become blocked‚ produce excessive secretions Sweat Glands – extreme decrease in salt reabsorbtion‚ resulting in high salt content in sweat. Lungs – Mucus
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sodium acetate 1.0 M sodium acid 1.0 M sulfuric acid 1.0 M sodium hydroxide Ice 0.1 M lead nitrate 0.1 M barium chloride 1.0 M cadmium chloride 1.0 M ammonium chloride potassium chloride 0.1 M potassium chloride 0.1 M copper (II) sulfate 0.1 M trisodium phosphate 0.1 M sodium sulfide 0.1 M sodium nitrate
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chemical reactions. (i) Hydrogen + Chlorine → Hydrogen chloride (ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride (iii) Sodium + Water → Sodium hydroxide + Hydrogen Answer (i) (ii) (iii) Question 3: Write a balanced chemical equation with state symbols for the following reactions. (i) Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride. (ii) Sodium hydroxide solution (in water) reacts with
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