Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 165
... excess of sodium car- bonate crystals , and boil for five minutes . Filter , wash , and reject the residue which consists largely of barium and calcium . carbonate . Add the washings to the filtrate . The filtrate contains sodium ...
... excess of sodium car- bonate crystals , and boil for five minutes . Filter , wash , and reject the residue which consists largely of barium and calcium . carbonate . Add the washings to the filtrate . The filtrate contains sodium ...
Strona 167
remove the excess of calcium nitrate . Dissolve the residue in 2 or 3 cc . of 12 N potassium hydroxide . Soluble K2 ... excess . Zinc sulphide is precipitated . Filter and wash the residue with water , discarding all except the first ...
remove the excess of calcium nitrate . Dissolve the residue in 2 or 3 cc . of 12 N potassium hydroxide . Soluble K2 ... excess . Zinc sulphide is precipitated . Filter and wash the residue with water , discarding all except the first ...
Strona 169
... excess of lead and silver . Furthermore , it has been found that the presence of sodium chloride greatly in- creases ... excess of sodium sulphate to precipitate the excess of lead ion . Filter , and if the to about 10 cc . ( a ) If ...
... excess of lead and silver . Furthermore , it has been found that the presence of sodium chloride greatly in- creases ... excess of sodium sulphate to precipitate the excess of lead ion . Filter , and if the to about 10 cc . ( a ) If ...
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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