The Owens College Junior Course of Practical Chemistry |
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Page 35
... platinum dish , pour over it some strong sulphuric acid , and heat gently . Observe the fumes of hydrofluoric acid which come off , and then place the waxed glass plate across the dish so as to be exposed to the gas , taking care that ...
... platinum dish , pour over it some strong sulphuric acid , and heat gently . Observe the fumes of hydrofluoric acid which come off , and then place the waxed glass plate across the dish so as to be exposed to the gas , taking care that ...
Page 42
... platinum wire , heat it , and dip it while hot in some sodium bicarbonate , so as to cause a small quantity to adhere to the wire ; now heat it with the blow - pipe flame until it is fused . * Then place on it a minute quantity of any ...
... platinum wire , heat it , and dip it while hot in some sodium bicarbonate , so as to cause a small quantity to adhere to the wire ; now heat it with the blow - pipe flame until it is fused . * Then place on it a minute quantity of any ...
Page 50
... PLATINUM , IRON , NICKEL , and 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 ...
... PLATINUM , IRON , NICKEL , and 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 ...
Page 51
... platinum wire coiled round it ) just below a small porcelain basin filled with water , yields grey film , which , on rubbing with a piece of filter paper , is col- lected into small globules . If the quantity of mercury be large ...
... platinum wire coiled round it ) just below a small porcelain basin filled with water , yields grey film , which , on rubbing with a piece of filter paper , is col- lected into small globules . If the quantity of mercury be large ...
Page 52
... platinum wire ( of the thickness of a horsehair ) , and , having obtained a clear bead , add a trace of any copper compound , and observe the blue bead obtained , which does not alter in the lower reducing flame . Add a trace of tin or ...
... platinum wire ( of the thickness of a horsehair ) , and , having obtained a clear bead , add a trace of any copper compound , and observe the blue bead obtained , which does not alter in the lower reducing flame . Add a trace of tin or ...
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Common terms and phrases
acetic acid acid solutions added AgNO3 produces alcohol alkaline ammonia ammonium antimony aqua regia arsenic barium Benzoic BENZOIC ACID black precipitate blue boiling borax calcium carbon dioxide chloride cipitate cloth cobalt College compounds conducting tube containing copper Crown 8vo decomposed dissolved distinguished English evolved Extra fcap fcap FeCl produces FeSO4 filter filtrate flask Fused grams group reagents H₂O H₂S H₂SO Heated on charcoal hydrate hydrochloric acid hydrogen insoluble iodide iodine iron Latin 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 re-precipitated reaction reducing flame residue salts Schools separate silver sodium solu soluble in excess soluble in HCl soluble in HNO3 strontium substance sulphate sulphide sulphuric acid tartaric acid Thallium tion violet white precipitate yellow precipitate yields zinc
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