Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 164
... dilute hydrochloric acid and a few drops of ferric chloride . A blue precipitate of ferric ferro- cyanide indicates the presence of ferro- cyanide ion . 4. Detection of Arsenite . Place 20 cc . of the filtrate from ( 2 ) in a ...
... dilute hydrochloric acid and a few drops of ferric chloride . A blue precipitate of ferric ferro- cyanide indicates the presence of ferro- cyanide ion . 4. Detection of Arsenite . Place 20 cc . of the filtrate from ( 2 ) in a ...
Strona 167
... dilute solution of ferrous sulphate , and then make acid with hydrochloric acid . A blue precipitate indicates the presence of ferricyanide . 3. Separation and Detection of Sulphide . To the filtrate from step ( 1 ) , add dilute ...
... dilute solution of ferrous sulphate , and then make acid with hydrochloric acid . A blue precipitate indicates the presence of ferricyanide . 3. Separation and Detection of Sulphide . To the filtrate from step ( 1 ) , add dilute ...
Strona 168
... dilute nitric acid , and warm for a short time until the residue changes colour . If all of the residue dissolves , iodide and bromide are absent . If they are present , pour off the nitric acid and add 10 cc . of dilute sulphuric acid ...
... dilute nitric acid , and warm for a short time until the residue changes colour . If all of the residue dissolves , iodide and bromide are absent . If they are present , pour off the nitric acid and add 10 cc . of dilute sulphuric acid ...
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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