Chemical News and Journal of Industrial Science, Volúmenes27-28Chemical news office., 1773 |
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Página 15
... sulphuric acid previously combined in the absence of phosphates and fluorides . The solution containing the soluble sulphate in the presence of free HCl is precisely neutralised whilst boiling with sodium carbonate free from sulphuric acid ...
... sulphuric acid previously combined in the absence of phosphates and fluorides . The solution containing the soluble sulphate in the presence of free HCl is precisely neutralised whilst boiling with sodium carbonate free from sulphuric acid ...
Página 16
... sulphur ores examined have yielded their sulphur readily . The gaseous products of the combustion which mecha- nically carry over with them small quantities of sulphates or sulphuric acid , being heavier than air , collect in the flask ...
... sulphur ores examined have yielded their sulphur readily . The gaseous products of the combustion which mecha- nically carry over with them small quantities of sulphates or sulphuric acid , being heavier than air , collect in the flask ...
Página 38
... sulphuric acid , exhibiting a blue - coloured solution , from which , however , the substance cannot again be separated un- ältered . On being heated with caustic potassa solution , cœru- lignon shows the following reactions : -At first ...
... sulphuric acid , exhibiting a blue - coloured solution , from which , however , the substance cannot again be separated un- ältered . On being heated with caustic potassa solution , cœru- lignon shows the following reactions : -At first ...
Página 45
... sulphuric acid . When cold a strong solution of green vitriol is carefully added , so as to float upon the surface of the mixture , when the presence of nitrogen is shown by a dark line at the junction of the two liquids . We must ...
... sulphuric acid . When cold a strong solution of green vitriol is carefully added , so as to float upon the surface of the mixture , when the presence of nitrogen is shown by a dark line at the junction of the two liquids . We must ...
Página 46
... sulphuric acid , 15:10 ; loss by heat , o'83 ; total , 98 66. Formula , Pb , S ; that is , a basic sulphate of lead , Use of Gas for the purpose of Producing a High Tempera- ture.-L. Forquignon and A. Leclerc . - The detailed ...
... sulphuric acid , 15:10 ; loss by heat , o'83 ; total , 98 66. Formula , Pb , S ; that is , a basic sulphate of lead , Use of Gas for the purpose of Producing a High Tempera- ture.-L. Forquignon and A. Leclerc . - The detailed ...
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Términos y frases comunes
acetic acid action alcohol alkaline alumina ammonia analysis aniline anthracene apparatus appears applied Assays atoms barium baryta body boiling bromine calcium carbonic acid caustic cent chemical chemistry chemists chloric acid chloride coal colour combination composition compounds containing converted copper crystallisation crystals decomposed decomposition deposited dilute dissolved distilled electricity employed ether evaporation experiments filtered flask formation formed formic acid formula furnace fused glass heat hydrate hydrochloric acid hydrogen Improvements insoluble iodide iron Laboratory lime liquid magnesia manganese manufacture matter metallic method methyl mineral mixture nitrate nitric acid nitrogen observed obtained ordinary oxalic oxide oxidising oxygen paper PATENTS phosphate phosphoric acid potash potassa potassium precipitate prepared present produced pure pyrites quantity reaction Royal salt sample silicate silver Society soda sodium soluble solution substance sulphate sulphide sulphuretted hydrogen sulphuric acid temperature tion toluidine treated tube vapour washed yields zinc
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Página 232 - Stevenson, president, in the chair. The minutes of the previous meeting having been read and confirmed, Mr.
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Página 170 - By a delicate mathematical analysis, Thomson arrives at the theorem that the ''average pressure at any point of an incompressible, frictionless fluid, originally at rest, but set in motion and kept in motion by solids, moving to and fro, or whirling round in any manner, through a finite space of it," would explain the attractions just described.
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Página 96 - Supplement; bringing the Record of Chemical Discovery down to the end of the year 1869 ; including also several Additions to, and Corrections of, former results which have appeared in 1870 and 1871.
Página 253 - ... effect is proportional to the magnetic intensity of the bar multiplied by the current traversing the coil seems to indicate that in this case the effect is produced by the attraction of the magnetic particles by the coil. But then it will be asked why so remarkable an augmentation of the effect is produced by the increase of tension in the case of the soft iron bars. When we are able to answer this question in a satisfactory manner, we shall probably have a much more complete acquaintance with...
Página 73 - Since it appeared that the purest and densest vapour alone gave the greatest number of lines, it became of interest to examine the spectra of compounds consisting of a metal combined with a nonmetallic element. Experiments with chlorides are recorded. It was found in all cases that the difference between the spectrum of the chloride and the spectrum of the metal was that under the same spark-conditions all the short lines were obliterated. Changing the spark-conditions, the final result was that...
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