SALTS AND THEIR PREPARATION SALTS A salt is a compound formed when the hydrogen ions in an acid are replaced by metal ions or by ammonium ions. Compounds in which the H+ ions in an acid have been replaced by ammonium ions (NH4+) are called ammonium salts. NOTE: •An anion is a negatively charged ion. Hence:•Hydrochloric acid gives chlorides. E.g. sodium chloride‚ ammonium chloride. •Nitric acid gives nitrates. E.g. barium nitrate‚ copper nitrate. •Sulphuric acid gives sulphates. E.g. silver sulphate
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PREPARATION OF POTASH ALUM [(K2SO4.Al2(SO4)3.24(H2O) Aim: To prepare a pure sample of potash alum. [K2SO4.Al2(SO4)3.24H2O] Principle: Potash alum is prepared by dissolving an equi molar mixture of aluminum sulphate and potassium sulphate in minimum amount of water containing a little amount of sulphuric acid and then subjecting the solution to crystallisation; octahedral crystals of potash alum separate out. Apparatus required: Beaker (100 ml) Trough Funnel Wire gauze Conical
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Support Material Exemplar Starter Pages GCE Chemistry B (Salters) OCR Advanced GCE in Chemistry B (Salters): H435 Unit: F336 Chemistry Individual Investigation This Support Material booklet is designed to accompany the OCR Advanced GCE specification in Chemistry B (Salters) for teaching from September 2008. Contents Contents 2 Support Materials 3 Choice of investigation topic 4 Health and Safety 33 Other forms of support 35 Support Materials These support materials should
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COVENANT UNIVERSITY FACULTY OF SCIENCE AND TECHNOLOGY DEPARTMENT OF CHEMISTRY COURSE TITLE: General Organic Chemistry COURSE CODE: CHM 121 ‚ UNIT: 2.0 . INTRODUCTORY AND IMPORTANCE OF ORGANIC CHEMISTRY Organic chemistry is the study of the compounds of carbon. Carbon compounds are far more numerous than those of other elements because carbon are able to bond together to form a wide range of chains and rings. The subject is named organic chemistry because living organisms are composed
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12. Beet reception and storage 13. Beet cleaning‚ washing and slicing 14. Juice extraction and pulp pressing 15. Lime-kiln and lime slaker 16. Juice clarification 17. Juice evaporator and steam/vapour/condensate system 18. Boiling plant (crystallisation) for raw sugar production 19. Thermal power station 20. Sugar final treatment 21. Water treatment system 22. Condensation station 23. Flow chart of dairy 24. Fresh tanker milk reception 25. Raw milk treatment and market milk production
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Nowadays‚ aspirin is often given to patients immediately after a heart attack to prevent recurrence or cardiac tissue death. Aspirin is a non-steroidal anti-inflammatory drug (NSAID). NSAIDs are medications with analgesic‚ antipyretic (something that reduces a fever)‚ and in higher doses anti-inflammatory effects. Non-steroidal
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Introduction: The Consulting Chemists Institute has been asked to analyze the drug preparation of Aspirin to find out what percentages of aspirin‚ sucrose‚ and drug preparation. The purpose of this experiment was to determine the unknown component of panacetin. Panacetin contains aspirin‚ sucrose‚ and an unknown component. Dichloromate reacts with Panacetin to produce the sucrose as an insoluble solid. Aspirin is removed from the solution by reacting with sodium bicarbonate. The aqueous layer reacts
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Separating The Components of “Panacetin” Observations Most natural products and many commercial preparations are mixtures containing a number of different substances. To obtain a pure compound from such a mixture‚ you must separate the desired compound from the other components of the mixture by taking advantage of differences in their physical and chemical properties. Acidic or basic substances are often converted to water-soluble salts‚ which can then be separated from the water-insoluble
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contains hydrated magnesium sulphate which has the formula MgSO4.xH2O. Experiment to find the value of x in a pure sample of hydrated magnesium sulphate. The method i will use is heating a known mass of magnesium sulphate to remove the water of crystallisation. x is found by weighing before and after heating to find the mass of the water then using the moles calculations to find x. The source I have used is: http://www.rsc.org/learn-chemistry/resource/res00000436/finding-the-formula-of-hydrated-copper-ii-sulfate
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end product‚ are done on a much larger scale in industry. The aspects they may differ in are equipment‚ time taken‚ and many other things. In this report I will explain how and why laboratory and industrial scale differ using the example of preparation of aspirin. The first difference is that instead of weighing the 2-hydroxybenzoic acid on scales on a work bench in a beaker as you would in small scale‚ it is easier and safer to weigh it onto scales‚ in a plastic bag on the floor. This is easier and
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