Chemical News and Journal of Industrial Science, Volumes 27-28Chemical news office., 1773 - Chemistry |
From inside the book
Results 1-5 of 100
Page 4
... hydrogen being evolved- KCNS + 3 ( C2H3O - OH ) = = C2H3O - OK7 ( C2H3O ) 2HN + CO2 + H2S . The reaction , however , takes a different course . In my first experiments the acetic acid was allowed to react on the sulphocyanate under ...
... hydrogen being evolved- KCNS + 3 ( C2H3O - OH ) = = C2H3O - OK7 ( C2H3O ) 2HN + CO2 + H2S . The reaction , however , takes a different course . In my first experiments the acetic acid was allowed to react on the sulphocyanate under ...
Page 19
... hydrogen very nearly in the relative proportion in which they combine to water , which has not been the case in the fresh coal . The pro- perty of the coal thus rapidly to absorb oxygen depends mainly upon its proportion of free hydrogen ...
... hydrogen very nearly in the relative proportion in which they combine to water , which has not been the case in the fresh coal . The pro- perty of the coal thus rapidly to absorb oxygen depends mainly upon its proportion of free hydrogen ...
Page 25
... hydrogen in the gas used , experiments were made in which pure sodium chloride was exposed to the action of washed and dry sulphuretted hydrogen , at various temperatures , for periods varying from ten minutes to three hours . Sodium ...
... hydrogen in the gas used , experiments were made in which pure sodium chloride was exposed to the action of washed and dry sulphuretted hydrogen , at various temperatures , for periods varying from ten minutes to three hours . Sodium ...
Page 30
... hydrogen in combination ; nitro- gen 5 ; carbon 4 ; boron 3 ; and oxygen 2 atoms of hydro- gen ; silver , on the contrary , only 1. But this so - called " equivalence " of an element is not absolutely fixed , for , in some of its ...
... hydrogen in combination ; nitro- gen 5 ; carbon 4 ; boron 3 ; and oxygen 2 atoms of hydro- gen ; silver , on the contrary , only 1. But this so - called " equivalence " of an element is not absolutely fixed , for , in some of its ...
Page 46
... Hydrogen in Complete Darkness . - Professor Mel- sens . This lengthy essay treats , in the first place , on the preparation of pure and dry sulphurous acid gas , which the author states is best obtained by causing strong sulphuric acid ...
... Hydrogen in Complete Darkness . - Professor Mel- sens . This lengthy essay treats , in the first place , on the preparation of pure and dry sulphurous acid gas , which the author states is best obtained by causing strong sulphuric acid ...
Other editions - View all
Common terms and phrases
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
Popular passages
Page 14 - Others apart sat on a hill retired, In thoughts more elevate, and reasoned high Of Providence, Foreknowledge, Will, and Fate— Fixed fate, free will, foreknowledge absolute — And found no end, in wandering mazes lost.
Page 108 - Chemistry, Medicine, Surgery, and the Allied Sciences. A Dictionary of Chemistry and the Allied Branches of other Sciences.
Page 232 - Stevenson, president, in the chair. The minutes of the previous meeting having been read and confirmed, Mr.
Page 5 - Thy Father has written for thee." " Come, wander with me," she said, "Into regions yet untrod; And read what is still unread In the manuscripts of God." And he wandered away and away With Nature, the dear old nurse, Who sang to him night and day The rhymes of the universe. And whenever the way seemed long, Or his heart began to fail, She would sing a more wonderful song, Or tell a more marvellous tale.
Page 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.
Page 144 - London. /Chemical Technology, or Chemistry in its ^-^ Applications to the Arts and Manufactures. By THOMAS RICHARDSON and HENRY WATTS.
Page 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.
Page 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...
Page 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...
Page 224 - An act to amend the law for the Prevention of Adulteration of Food and Drink, and of Drugs.