The Owens College Junior Course of Practical Chemistry |
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Page 9
... change of colour from blue to red . 12. Presence of oxygen in air . Oxygen is present in the air diluted with another gas called nitrogen . In one hundred volumes of air , about twenty - one consist of oxygen , and seventy - nine of ...
... change of colour from blue to red . 12. Presence of oxygen in air . Oxygen is present in the air diluted with another gas called nitrogen . In one hundred volumes of air , about twenty - one consist of oxygen , and seventy - nine of ...
Page 18
... change the colour from red to blue . Place the litmus paper in the solution , and the change will be still more marked . ( c ) Hold a glass rod which has been dipped in fuming hydrochloric acid over the solution of ammo- nia it will at ...
... change the colour from red to blue . Place the litmus paper in the solution , and the change will be still more marked . ( c ) Hold a glass rod which has been dipped in fuming hydrochloric acid over the solution of ammo- nia it will at ...
Page 30
... change of colour from blue to red , showing the acid nature of the solution . ( 6 ) Hydrochloric acid is a powerful acid . Take some of the aqueous solution of the gas ( pre- pared in 38 ) and add a drop or two of litmus solution to it ...
... change of colour from blue to red , showing the acid nature of the solution . ( 6 ) Hydrochloric acid is a powerful acid . Take some of the aqueous solution of the gas ( pre- pared in 38 ) and add a drop or two of litmus solution to it ...
Page 36
... 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- dation , and the potassium chromate to a chromium salt of a green colour ; while ...
... 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- dation , and the potassium chromate to a chromium salt of a green colour ; while ...
Page 40
... change in colour from red to blue . Dis- solve a second portion in water , and add to it hydro- chloric acid by degrees , until a drop of the liquid taken out on a glass rod ceases to colour litmus paper blue . On evaporating the liquid ...
... change in colour from red to blue . Dis- solve a second portion in water , and add to it hydro- chloric acid by degrees , until a drop of the liquid taken out on a glass rod ceases to colour litmus paper blue . On evaporating the liquid ...
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Common terms and phrases
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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