tested‚ limewater will be added to the gas (produced by combining hydrochloric acid and sodium bicarbonate)‚ if the limewater turns cloudy or turns milky then the gas is carbon dioxide. Question What is the effect of different reactants on
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11 FREQUENTLY ASKED QUESTIONS For any other study information see the brochure my Studies@Unisa. 9 SMI181Q/101/2013 12 CONCLUSION We hope that you will enjoy this module and wish you success 13 ADDENDUM ADDENDUM A: COMPULSORY ASSIGNMENTS FOR FIRST SEMESTER SEMESTER 1 Assignment 1 Due date: 08 March 2013 Assignment Unique number: 748509 (Students registered for the first semester only) Instruction In preparing for this assignment do not rely only on the study guide. This assignment
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How does acid precipitation affect marble and limestone buildings? Acid rain is a type of precipitation that is characterised by containing contaminating substances such as sulphuric and nitric acid‚ both of which have harmful effects on the environment. Both marble and limestone are extremely vulnerable to the damages done by acid rain due to their components. These materials contain calcite‚ a substance that easily reacts and dissolves with acid. Acid rain is the cause of the destruction of many
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many moles of NaCl are there in 25 cm3 of a 50 gdm-3 solution? Reacting masses and volumes 1. 25 cm3 of a solution of 0.1 moldm-3 NaOH reacts with 50 cm3 of a solution of hydrochloric acid. What is the molarity of the acid? 2. 25.0 cm3 of a 0.10 moldm-3 solution of sodium hydroxide was titrated against a solution of hydrochloric acid of unknown concentration. 27.3 cm3 of the acid was required. What was the concentration of the acid? 3. 10 cm3 of a solution of NaCl react with 15 cm3 of a 0.02 moldm-3
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bottles containing the following Butan-1-ol Butan-2-ol 2-methylpropan-2-ol Potassium permanganate solution‚ KMnO4(aq) (0.01 mol/L) Concentrated hydrochloric acid‚ HCl(aq) (12 mol/L) *Alcohols are flammable and should be kept away for heat sources or sources of ignition. They also should be used in a well-ventilated area. *Concentrated hydrochloric acid is very corrosive and should be handled under a fume hood and by a teacher. The teacher should be notified if any spills occur. *Potassium permanganate
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see How the Concentration of Hydrochloric acid affects the Rate of Reaction with Calcium Carbonate Rate This Paper: 1 2 3 4 5 Length: 3036 words (8.7 double-spaced pages) Rating: Red (FREE) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - An Investigation to see How the Concentration of Hydrochloric acid affects the Rate of Reaction with Calcium Carbonate I am going to investigate how concentration of hydrochloric acid affects the rate of reaction
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1871. (In Chemical news‚ v. 23‚ p. 98.) Paper before the Manchester Literary and Philosophical Society Corrosion and protection of metal surfaces: 9‚500 w. 1897. (In Workshop receipts‚ v. 5‚ p. 283.) Takes up copper‚ iron and steel‚ lead‚ silver and zinc. Corrosion of iron: 4‚700 w Corrosion of iron: rusting. 3‚500 w. 1907. (In Engineering news‚ v. 58‚ p. 328.) See also editorial‚ p. 339. The same. (In Iron and coal trades review‚ v. 75‚ p. 1566.) Consideration of paper by Cushman‚ with reference
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eLearning 2009 Publication No. 91860 Rate of Reaction of Sodium Thiosulfate and Hydrochloric Acid Rate Laws Introduction The purpose of this demonstration is to investigate the effect of sodium thiosulfate concentration on the rate of reaction of sodium thiosulfate with hydrochloric acid. The reaction‚ which produces solid sulfur‚ will be followed by measuring the time needed for the reaction mixture to become opaque. The results will be analyzed graphically to determine the order of
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alkali neutralizes an acid‚ a salt and water are formed. Aqueous hydrogen ions (H+(aq)) from the acid react with the hydroxide ions (OH-(aq)) from the alkali‚ forming water. For hydrochloric acid and sodium hydroxide: H+(aq) + Cl-(aq) + Na+(aq) + OH-(aq) → Na+(aq) + Cl-(aq) + H2O(l) Hydrochloric acid Hydrochloric acid Sodium Chloride Sodium Chloride Sodium Hydroxide Sodium Hydroxide Neutralization is an exothermic reaction which means it gives out energy to the surroundings in the
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E XPE RIME NT 4 . 5 Reactions of acids Aim To investigate and compare some reactions of a strong acid‚ hydrochloric acid‚ and a weak acid‚ ethanoic acid (common name‚ acetic acid) Equipment Dropper bottles containing: • 0.1 M hydrochloric acid‚ HCl • 0.1 M ethanoic acid (acetic acid)‚ CH3COOH • 0.1 M sodium hydroxide‚ NaOH • 1 M hydrochloric acid‚ HCl • 1 M ethanoic acid (acetic acid)‚ CH3COOH • universal indicator solution • limewater (calcium hydroxide‚ Ca(OH)2) Marble chips (calcium carbonate
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