Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 164
... precipitate of arsenious sulphide is formed if arsenite is present . If arsenite is absent and no precipitate forms , heat the solution to boiling ; if arsen- ate is present , a yellow precipitate consist- ing of sulphur and arsenious ...
... precipitate of arsenious sulphide is formed if arsenite is present . If arsenite is absent and no precipitate forms , heat the solution to boiling ; if arsen- ate is present , a yellow precipitate consist- ing of sulphur and arsenious ...
Strona 166
... precipitate forms , add about 1 g . of sodium acetate crystals and 2 cc . of 1 N acetic acid . Shake , and if the precipitate does not dissolve , fluoride is present . If small crystals adhere to the wall of the test tube , this is ...
... precipitate forms , add about 1 g . of sodium acetate crystals and 2 cc . of 1 N acetic acid . Shake , and if the precipitate does not dissolve , fluoride is present . If small crystals adhere to the wall of the test tube , this is ...
Strona 169
... precipitate , in- soluble in nitric acid , forms if chlorate is present . Sensitivity of Chlorate Test . Conc . of ... precipitate Heavy precipitate Heavy precipitate Slight precipitate Slight precipitate Slight precipitate Cloudy ...
... precipitate , in- soluble in nitric acid , forms if chlorate is present . Sensitivity of Chlorate Test . Conc . of ... precipitate Heavy precipitate Heavy precipitate Slight precipitate Slight precipitate Slight precipitate Cloudy ...
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acetic acid acetone add 10 cc added addition alkaline alloys ammonium hydroxide analysis anions annealing arsenate arsenite barium and calcium barium nitrate boiling borate calcium nitrates carbonate Chem Chemical chloride chromate colour complete consisting containing Cool crystals cyanide Detection determine dilute discard dissolve distortion drops effect excess fatigue ferric ferrocyanide Filter filtrate flask fluoride followed formate forms give grams heat Heavy hydrogen hydroxide increase indicates insoluble Institution ions lead Lecture London material Mechanical metals methods minutes mixture moulds nickel obtained oxalate Patent phosphate plant portion potassium precipitate precipitate forms precipitation is complete present produced published reduction removed salts saturated Save Sensitivity Separation September shown silver Slight sodium soluble solution solution containing step studied Sub-Group sufficiently sulphide sulphuric acid tartrate temperature test tube thiocyanate thiosulphate tion various volume Wash the residue white precipitate wire Yellow