Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 164
... step ( 2 ) . Transfer all of the residue to a small 125 cc . flask and add 10 cc . of dilute acetic acid . Fit the flask with a gas delivery tube , and pass any gas evolved in the reaction into a saturated solution of barium hydroxide ...
... step ( 2 ) . Transfer all of the residue to a small 125 cc . flask and add 10 cc . of dilute acetic acid . Fit the flask with a gas delivery tube , and pass any gas evolved in the reaction into a saturated solution of barium hydroxide ...
Strona 165
... step 15 . may be omitted if arsenate was found in step ( 4 ) . If arsenate has not been detected , heat the filtrate from ( 14 ) to boiling , and again saturate with hydrogen sulphide Yellow arsenic sulphide precipitates it arsenate is ...
... step 15 . may be omitted if arsenate was found in step ( 4 ) . If arsenate has not been detected , heat the filtrate from ( 14 ) to boiling , and again saturate with hydrogen sulphide Yellow arsenic sulphide precipitates it arsenate is ...
Strona 167
... 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 over the paper a second time . Add a few more drops of sodium hydroxide , if necessary , to ...
... 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 over the paper a second time . Add a few more drops of sodium hydroxide , if necessary , to ...
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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