Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 165
... 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 sulphate , oxa- late , fluoride ...
... 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 sulphate , oxa- late , fluoride ...
Strona 166
... 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 still better evidence that the substance precipitated is ...
... 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 still better evidence that the substance precipitated is ...
Strona 168
... crystals . Place the solution in a small Erlenmeyer flask . The flask is fitted with a cork and a delivery tube , which dips into a solution of aniline acetate ( 10 ) ( 1 cc . of glacial acetic acid and 4 cc . of a saturated solution of ...
... crystals . Place the solution in a small Erlenmeyer flask . The flask is fitted with a cork and a delivery tube , which dips into a solution of aniline acetate ( 10 ) ( 1 cc . of glacial acetic acid and 4 cc . of a saturated solution of ...
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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