The Chemical News and Journal of Industrial Science, Tom 1221921 |
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Strona 28
... tube . Böhm found the copper - fluoride crystals to be different from the others in that they soon lose their water of cry- stallation in the air and that they decompose completely when heated in a closed tube , water and hydrogen ...
... tube . Böhm found the copper - fluoride crystals to be different from the others in that they soon lose their water of cry- stallation in the air and that they decompose completely when heated in a closed tube , water and hydrogen ...
Strona 29
... tube . Presumably the hydrogen fluoride is driven off first , whereupon the water of crystallisation hydrolyses the copper fluoride . Observations on Dissociation . The crystal fluorides of cobalt , nickel , man- ganese , and copper all ...
... tube . Presumably the hydrogen fluoride is driven off first , whereupon the water of crystallisation hydrolyses the copper fluoride . Observations on Dissociation . The crystal fluorides of cobalt , nickel , man- ganese , and copper all ...
Strona 33
... tube , and the mixture is warmed slightly to dissolve the resorcinol . It is then cooled and 5 cc . of con- centrated sulphuric acid is carefully and slowly poured in along the side of the tube so as to form a layer . A blue ring will ...
... tube , and the mixture is warmed slightly to dissolve the resorcinol . It is then cooled and 5 cc . of con- centrated sulphuric acid is carefully and slowly poured in along the side of the tube so as to form a layer . A blue ring will ...
Strona 40
... tube the vapours of selenium tetrachloride and selenium dioxide . Michaelis prepared the oxychloride by the action of phosphorus pentachloride on sele- nium dioxide ( Michaelis , Ann . , 1887 , ccxl . , 150 ) . Later , in 1889 , in ...
... tube the vapours of selenium tetrachloride and selenium dioxide . Michaelis prepared the oxychloride by the action of phosphorus pentachloride on sele- nium dioxide ( Michaelis , Ann . , 1887 , ccxl . , 150 ) . Later , in 1889 , in ...
Strona 54
... tube of lime glass . The tube was then plunged quickly into liquid air , freezing the water with such rapidity that only very minute crystals were formed . tube was then kept at liquid air temperature in a specially constructed Dewar ...
... tube of lime glass . The tube was then plunged quickly into liquid air , freezing the water with such rapidity that only very minute crystals were formed . tube was then kept at liquid air temperature in a specially constructed Dewar ...
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