Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 164
... filtrate from ( 2 ) add 1 cc . of 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 ) add 1 cc . of 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 ...
Strona 165
... filtrate . The filtrate contains sodium sulphate , oxa- late , fluoride , chromate , and carbonate . Make slightly acid with concentrated acetic acid and boil to expel carbon dioxide . Cool the solution and make it alkaline with ...
... filtrate . The filtrate contains sodium sulphate , oxa- late , fluoride , chromate , and carbonate . Make slightly acid with concentrated acetic acid and boil to expel carbon dioxide . Cool the solution and make it alkaline with ...
Strona 167
... filtrate . Save the filtrate for ( 3 ) . 2. Detection of Ferricyanide . To the residue from step ( 1 ) , on the filter paper , add 10 cc . of 2 N sodium hydroxide solu- tion . If all of the residue does not dissolve , pour the filtrate ...
... filtrate . Save the filtrate for ( 3 ) . 2. Detection of Ferricyanide . To the residue from step ( 1 ) , on the filter paper , add 10 cc . of 2 N sodium hydroxide solu- tion . If all of the residue does not dissolve , pour the filtrate ...
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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