The Owens College Junior Course of Practical Chemistry |
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Page 43
... Cobalt , Iron . Nickel . ( e ) Compounds reduced to metal when heated on charcoal with reducing agents , but which are at once converted into oxides : Cadmium . Oxide is brown . Zinc Oxide is white . * These reactions must be carried ...
... Cobalt , Iron . Nickel . ( e ) Compounds reduced to metal when heated on charcoal with reducing agents , but which are at once converted into oxides : Cadmium . Oxide is brown . Zinc Oxide is white . * These reactions must be carried ...
Page 44
... Cobalt . Nickel . Manganese . Chromium . Copper . Yellow . Blue . Reddish yellow . Amethyst . Green . Blue . ( h ) Compounds which impart a characteristic colour to any non - luminous flame : Barium . Strontium . Calcium . Green ...
... Cobalt . Nickel . Manganese . Chromium . Copper . Yellow . Blue . Reddish yellow . Amethyst . Green . Blue . ( h ) Compounds which impart a characteristic colour to any non - luminous flame : Barium . Strontium . Calcium . Green ...
Page 45
... Cobalt powder soluble in HNO , yields red solution , which gives a blue bead when fused with borax . Nickel powder soluble in HNO3 yields green solu- tion , which gives a reddish , yellow bead when fused with borax . ( e ) Cadmium oxide ...
... Cobalt powder soluble in HNO , yields red solution , which gives a blue bead when fused with borax . Nickel powder soluble in HNO3 yields green solu- tion , which gives a reddish , yellow bead when fused with borax . ( e ) Cadmium oxide ...
Page 46
Francis Jones. Iron borax bead , light green in reducing flame . Cobalt borax bead , deep blue in either oxidizing or reducing flame . Nickel borax bead , reddish yellow when hot , paler on cooling , and finally nearly colourless in ...
Francis Jones. Iron borax bead , light green in reducing flame . Cobalt borax bead , deep blue in either oxidizing or reducing flame . Nickel borax bead , reddish yellow when hot , paler on cooling , and finally nearly colourless in ...
Page 50
... COBALT . They may be further distin- guished as follows : - Copper . Red bead , soluble in HNO , Tin . White bead Silver . 99 Gold . " " 99 Yellow bead , insoluble Platinum . Non - magnetic powder Iron . Magnetic powder Fusible to 99 ...
... COBALT . They may be further distin- guished as follows : - Copper . Red bead , soluble in HNO , Tin . White bead Silver . 99 Gold . " " 99 Yellow bead , insoluble Platinum . Non - magnetic powder Iron . Magnetic powder Fusible to 99 ...
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Common terms and phrases
acetic acid acid solutions added alkaline ammonia ammonium antimony aqua regia arsenic BaCO3 barium Benzoic BENZOIC ACID black precipitate blue boiling borax brown calcium Cambridge carbon dioxide chloride cipitate cloth cobalt College colour compounds conducting tube containing copper Crown 8vo decomposed dissolved distinguished English evolved Extra fcap fcap FeSO4 filter filtrate flask Fused grams group reagents H₂O H₂S H₂SO Heated on charcoal hydrate hydrochloric acid hydrogen insoluble iodide iodine iron manganese manganese dioxide mercury mixture moistened NaHO neutral solutions NH)HO NH4)2S produces NH4Cl nitrate nitric acid observe obtained oxalic oxalic acid oxygen platinum potassium chlorate produces a precipitate produces a white Professor re-precipitated reaction reducing flame residue salts Schools separate silver sodium solu soluble in excess soluble in HCl soluble in HNO3 strontium student substance sulphate sulphide sulphuric acid tartaric acid Thallium tion violet white precipitate yellow precipitate yields zinc
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