Chemical News and Journal of Physical Science, Tom 114Chemical news office., 1916 |
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Strona 15
... concentrated nitric acid . As the chief impurity , praseo- dymium , seemed to accumulate rapidly in the more soluble fractions , the portion which had been crystallised as chloride also was converted to nitrate and fraction- ally ...
... concentrated nitric acid . As the chief impurity , praseo- dymium , seemed to accumulate rapidly in the more soluble fractions , the portion which had been crystallised as chloride also was converted to nitrate and fraction- ally ...
Strona 16
... concentrated nitric acid than praseodymium nitrate the quantities of thess impurities remaining must have been very small indeed . Although the proportions of impurity are small , yet because the atomic weights of both samarium and ...
... concentrated nitric acid than praseodymium nitrate the quantities of thess impurities remaining must have been very small indeed . Although the proportions of impurity are small , yet because the atomic weights of both samarium and ...
Strona 19
... concentrated nitric acid . Chloride , prepared from the final fractions of nitrate , was analysed by comparison with silver . The atomic weight of neodymium was thus found to be 144 261. The average of this result and that found earlier ...
... concentrated nitric acid . Chloride , prepared from the final fractions of nitrate , was analysed by comparison with silver . The atomic weight of neodymium was thus found to be 144 261. The average of this result and that found earlier ...
Strona 21
... concentrated hydrochloric acid . To remove chlorates ( compare Ramsay , Journ . Agr . Sci . , 1914 , vi . , 194 ) and silica , which must neces- sarily be present from the action of alkali on glass , the solution was evaporated to ...
... concentrated hydrochloric acid . To remove chlorates ( compare Ramsay , Journ . Agr . Sci . , 1914 , vi . , 194 ) and silica , which must neces- sarily be present from the action of alkali on glass , the solution was evaporated to ...
Strona 23
... concentrated sulphuric acid , The freshly prepared crystals have a melting point of 33-35 ° , a little lower than the corresponding bromide . The average of several analyses for aluminium was 14.9 per cent and for chloride 50'8 per cent ...
... concentrated sulphuric acid , The freshly prepared crystals have a melting point of 33-35 ° , a little lower than the corresponding bromide . The average of several analyses for aluminium was 14.9 per cent and for chloride 50'8 per cent ...
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