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INTRODUCTION LABORATORY PRACTICE
Determination of Aluminium
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acetate acid solution add 10 ml alkaline alloy aluminium ammonia ammonium sulphate ammonium sulphate solution Anal barium beaker blank boron calcium cast iron cent Chem chloride solution chromium collecting the filtrate colorimetric colour containing Cool copper cupferron determination dilute dissolution is complete end point evaporate to fumes excess extract ferric ferrous ammonium sulphate fuse graduated flask heat to boiling hot water hydrochloric acid hydrochloric acid 50 hydrofluoric acid hydrogen peroxide hydrogen sulphide ignition iodine litre manganese minutes molybdate molybdenum nickel nitric acid oxide oxidised perchloric acid persulphate phosphoric acid phosphorus platinum crucible potassium dichromate Principle of Method Reagents reduced removed residue salts silica silicon silver nitrate sodium carbonate sodium hydroxide sodium hydroxide solution sodium peroxide soluble stannous chloride sulphur dioxide sulphuric acid sulphuric acid 20 temperature THEORETICAL CONSIDERATIONS thiocyanate thiosulphate titanium titration tube tungsten vanadium volume washing with hot weight of sample Whatman filter paper zirconium