Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 164
... yellow 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 ...
... yellow 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 ...
Strona 165
... Yellow insoluble arsenious sulphide indicates the presence of arsenite . Filter the solution and test for complete precipitation with hydrogen sul- phide . Filter again if necessary . Detection of Arsenate . This step 15 . may be ...
... Yellow insoluble arsenious sulphide indicates the presence of arsenite . Filter the solution and test for complete precipitation with hydrogen sul- phide . Filter again if necessary . Detection of Arsenate . This step 15 . may be ...
Strona 170
... Yellow ammonium picrate is formed if nitrate is present . Phenoldisulphonic acid is prepared by heating 370 grams of ... Yellow colour Yellow colour Solution ( cc . ) 0.000590000 1 0.000059000 1 0.000005900 1 No result 0.000029500 1 No ...
... Yellow ammonium picrate is formed if nitrate is present . Phenoldisulphonic acid is prepared by heating 370 grams of ... Yellow colour Yellow colour Solution ( cc . ) 0.000590000 1 0.000059000 1 0.000005900 1 No result 0.000029500 1 No ...
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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