The Owens College Junior Course of Practical ChemistryMacmillan and Company, 1887 - 201 sider |
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Side 15
... brown vapours fill the test - tube . In this case also the nitric acid acts as an oxidizing agent , forming copper nitrate , and red fumes of the oxides of nitrogen are given off . For explanation see 30 and 31 . ( c ) Add a few drops ...
... brown vapours fill the test - tube . In this case also the nitric acid acts as an oxidizing agent , forming copper nitrate , and red fumes of the oxides of nitrogen are given off . For explanation see 30 and 31 . ( c ) Add a few drops ...
Side 21
... brown colour , 2 NO +0 NO , and NO + 0 = NO2 . Remove a jar of the gas from the pneumatic trough and expose it to the air . Observe at once the formation of red fumes , consisting chiefly of nitrogen tetroxide , ( NO2 ) . Now dip the ...
... brown colour , 2 NO +0 NO , and NO + 0 = NO2 . Remove a jar of the gas from the pneumatic trough and expose it to the air . Observe at once the formation of red fumes , consisting chiefly of nitrogen tetroxide , ( NO2 ) . Now dip the ...
Side 32
... and one large portion . Add to one of the small portions some water , to another some alcohol , and to the third a solution of potassium iodide , and observe the colours varying from pale to dark brown , 32 PRACTICAL CHEMISTRY .
... and one large portion . Add to one of the small portions some water , to another some alcohol , and to the third a solution of potassium iodide , and observe the colours varying from pale to dark brown , 32 PRACTICAL CHEMISTRY .
Side 33
Francis Jones. observe the colours varying from pale to dark brown , which the solutions possess . ( b ) Free iodine forms with starch a compound called iodide of starch , which has a dark blue colour . Powder a piece of starch ( about ...
Francis Jones. observe the colours varying from pale to dark brown , which the solutions possess . ( b ) Free iodine forms with starch a compound called iodide of starch , which has a dark blue colour . Powder a piece of starch ( about ...
Side 36
... brown vapours of oxides of nitrogen which are given off , and in the second the change of colour from yellow to green . In both cases the sulphur dioxide has acted as a reducing agent , reducing the nitric acid to a lower stage of oxi ...
... brown vapours of oxides of nitrogen which are given off , and in the second the change of colour from yellow to green . In both cases the sulphur dioxide has acted as a reducing agent , reducing the nitric acid to a lower stage of oxi ...
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Vanlige uttrykk og setninger
acetic acid added AgNO3 alkaline ammonia ammonium antimony aqua regia arsenic barium black precipitate blue colour boiling borax bromide brown calcium carbon dioxide charcoal splinter chloride cipitate compounds conducting tube copper Crown 8vo crucible crystals decomposed dilute solutions dissolved distilled drop Edition evaporate Fcap filter filtrate flask fused glass grams group reagents H₂O H₂S hydrate hydrochloric acid hydrogen insoluble iodide iodine iron liquid manganese manganese dioxide mercury metallic mixture moistened NaHO neutral solutions NH)HO NH4)2S produces NH4Cl nitric acid numerous Illustrations observe obtained oxalic acid oxygen phosphorus platinum porcelain potassium chlorate powder produces a precipitate produces a white Professor reaction reducing flame residue salt silver chloride silver nitrate sodium sodium carbonate solu soluble soluble in excess soluble in HCl soluble in HNO3 substance sulphate sulphide sulphuric acid tartaric acid tion violet wash Weigh white precipitate yellow precipitate yields zinc
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