Chemical News and Journal of Physical Science, Tom 103Chemical news office., 1911 |
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Strona 6
... acid formed during the bromination is titrated against sodium thiosulphate by adding half a grm . of sodium iodate to the flask , after the titration is finished , and titrating to the second disappearance of the blue colour . Or the ...
... acid formed during the bromination is titrated against sodium thiosulphate by adding half a grm . of sodium iodate to the flask , after the titration is finished , and titrating to the second disappearance of the blue colour . Or the ...
Strona 15
... acid solution ( 1:10 ) to which some hydrogen peroxide ( 2 cc . perhydrol per 100 cc . ) had been added . The same stripping solution was used a very considerable number of times . The use of a nickel cathode for zinc determinations is ...
... acid solution ( 1:10 ) to which some hydrogen peroxide ( 2 cc . perhydrol per 100 cc . ) had been added . The same stripping solution was used a very considerable number of times . The use of a nickel cathode for zinc determinations is ...
Strona 16
... acid by the addition of more acetic acid . The temperature was kept low by allowing the beaker to stand in a large crystallising dish containing cold water . The liquid was tested for freedom from zinc after the experiment by means of ...
... acid by the addition of more acetic acid . The temperature was kept low by allowing the beaker to stand in a large crystallising dish containing cold water . The liquid was tested for freedom from zinc after the experiment by means of ...
Strona 19
... acid was never obtained , but disulphonic acids or a mixture of di- and tri - sulphonic acids always resulted . Carbazole is easily sulphonated by 67 per cent sulphuric acid , giving a disulphonic acid , differing from that of Schultz ...
... acid was never obtained , but disulphonic acids or a mixture of di- and tri - sulphonic acids always resulted . Carbazole is easily sulphonated by 67 per cent sulphuric acid , giving a disulphonic acid , differing from that of Schultz ...
Strona 21
... acids , and certain nitrogenous compounds , may be affected by the acid , the actual value which the determination is intended to express thus being vitiated . In view of this , several well known investigators have proposed the use of ...
... acids , and certain nitrogenous compounds , may be affected by the acid , the actual value which the determination is intended to express thus being vitiated . In view of this , several well known investigators have proposed the use of ...
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absorption acetic acid action alcohol alkali alloy amalgam ammonia ammonium amount Analysis apparatus atomic weight B.Sc boiling bromine calcium carbon cent Chem CHEMICAL NEWS Office chemists chloride CLERKENWELL ROAD cobalt colour compounds concentrated condenser containing copper crucible crystalline crystals D.Sc determined dilute dioxide dissolved Edition electric electrolyte ether ethyl evaporated experiments Farringdon Street formed fractions G. S. Newth gases grms heat hydrate hydrazine hydrochloric acid hydrogen Inorganic Laboratory liquid London Manufacture melting mercury metal method mgrms mixture molecular molecules neodymium Newcastle Street nitrate nitric acid nitrogen obtained Organic Chemistry oxide oxidising oxygen paper Physical platinum post free potassium Practical praseodymium precipitate prepared present pressure Prof pure quantity radium reaction reagent residue Royal salt silver Sir William Crookes Society sodium soluble solution solvent substance sulphate sulphuric acid temperature Text-book tion tube vapour volume W. H. Perkin zinc ΙΟ