Chemical News and Journal of Industrial Science, Tomy 119-120Chemical news office., 1919 |
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Strona 1
... A neutral solution of the chlorides of these earths was prepared by slowly adding the oxides to warm dilute hydrochloric acid until the oxides were in slight excess The liquid was then heated to boiling in the presence.
... A neutral solution of the chlorides of these earths was prepared by slowly adding the oxides to warm dilute hydrochloric acid until the oxides were in slight excess The liquid was then heated to boiling in the presence.
Strona 2
... oxides of the earths had been precipitated at the cathode in the form of hydroxides . his purpose was prepared by dissolving 5 grms . of 2 CHEMICAL NEWS , July 4 , 1919 Electrolysis of Solutions of the Rare Earths . {
... oxides of the earths had been precipitated at the cathode in the form of hydroxides . his purpose was prepared by dissolving 5 grms . of 2 CHEMICAL NEWS , July 4 , 1919 Electrolysis of Solutions of the Rare Earths . {
Strona 4
... prepared by dissolving 5 grms . of the oxide in a slight excess of hydrochloric acid , removing the excess of acid by evaporation and diluting the solution to 25 cc . with distilled water . Whenever Congo - red paper showed there was ...
... prepared by dissolving 5 grms . of the oxide in a slight excess of hydrochloric acid , removing the excess of acid by evaporation and diluting the solution to 25 cc . with distilled water . Whenever Congo - red paper showed there was ...
Strona 5
... prepared by precipitating the hydroxides of the earths with ammonium hydroxide , washing the precipitate on a Büchner funnel with hot water until it was free from ammonium salts , and then bringing the precipitated bydroxide into ...
... prepared by precipitating the hydroxides of the earths with ammonium hydroxide , washing the precipitate on a Büchner funnel with hot water until it was free from ammonium salts , and then bringing the precipitated bydroxide into ...
Strona 10
... prepared by coupling glucose with parahydrazine - benzoic acid . The sodium salt of glucose - phenyl - osazone - para - carboxylic acid pre- pared in this way , proving to be a very suitable dye for the preparation of sharp cut light ...
... prepared by coupling glucose with parahydrazine - benzoic acid . The sodium salt of glucose - phenyl - osazone - para - carboxylic acid pre- pared in this way , proving to be a very suitable dye for the preparation of sharp cut light ...
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