Chemical News and Journal of Industrial Science, Tomy 121-122Chemical news office., 1920 |
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Strona 4
... solution of potassium bromide . The distillate was allowed to drip into a solu- tion of potassium oxalate prepared by neutralising pure oxalic acid with pure potassium carbonate . The potas- sium bromide thus obtained was recrystallised ...
... solution of potassium bromide . The distillate was allowed to drip into a solu- tion of potassium oxalate prepared by neutralising pure oxalic acid with pure potassium carbonate . The potas- sium bromide thus obtained was recrystallised ...
Strona 6
... solutions for producing perfectly vulcanised seams and joints has proved highly satisfactory in practice , and inner tubes repaired in a few moments by the new process have an excellent life . Further , by the aid of the solution ...
... solutions for producing perfectly vulcanised seams and joints has proved highly satisfactory in practice , and inner tubes repaired in a few moments by the new process have an excellent life . Further , by the aid of the solution ...
Strona 14
... solution was strong , a gelatinous precipitate of silica was obtained . He found that by placing this clear solution in a small dish made of parchment , and floating it in water , the sodium chloride produced by the reaction passed ...
... solution was strong , a gelatinous precipitate of silica was obtained . He found that by placing this clear solution in a small dish made of parchment , and floating it in water , the sodium chloride produced by the reaction passed ...
Strona 25
... Solution . CHARCOAL dust used , 15 grms . per litre of solution . Temperature kept as nearly constant as possible and stirring done by a Heinrich mechanical stirrer . At intervals some of the mixture , char- coal - solution , removed ...
... Solution . CHARCOAL dust used , 15 grms . per litre of solution . Temperature kept as nearly constant as possible and stirring done by a Heinrich mechanical stirrer . At intervals some of the mixture , char- coal - solution , removed ...
Strona 55
... solution . No. 8 . 05 grm . sample of the calcite was dissolved directly in dilute hydrochloric acid ; the solution was diluted to 150 cc . and made barely alkaline with freshly distilled ammonia ; a hazy precipi- tate of ferric and ...
... solution . No. 8 . 05 grm . sample of the calcite was dissolved directly in dilute hydrochloric acid ; the solution was diluted to 150 cc . and made barely alkaline with freshly distilled ammonia ; a hazy precipi- tate of ferric and ...
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