Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 167
... acid and 5 cc . of a solution of zinc nitrate ( 100 grams of zinc nitrate per liter ) . If a precipitate forms , add ... sulphuric acid , and dilute to 10 cc . Filter and discard the residue . To the filtrate add 2 cc . of dilute ferric ...
... acid and 5 cc . of a solution of zinc nitrate ( 100 grams of zinc nitrate per liter ) . If a precipitate forms , add ... sulphuric acid , and dilute to 10 cc . Filter and discard the residue . To the filtrate add 2 cc . of dilute ferric ...
Strona 168
... sulphuric acid and allow it to stand for a few minutes . Cool and pour into 15 cc . of water ; and then boil for one minute to expel carbon monoxide and sulphur dioxide . Again cool and add 0.5 grams of potassium permanganate crystals ...
... sulphuric acid and allow it to stand for a few minutes . Cool and pour into 15 cc . of water ; and then boil for one minute to expel carbon monoxide and sulphur dioxide . Again cool and add 0.5 grams of potassium permanganate crystals ...
Strona 170
... acid is prepared by heating 370 grams of concentrated sulphuric acid with 30 grams of phenol at the temper- ature of boiling water for six hours . This solution is used without dilution . Sensitivity of Nitrate Test . Conc . NO3 ( L ...
... acid is prepared by heating 370 grams of concentrated sulphuric acid with 30 grams of phenol at the temper- ature of boiling water for six hours . This solution is used without dilution . Sensitivity of Nitrate Test . Conc . NO3 ( L ...
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acetic acid acetone add 10 cc added addition alkaline alloys ammonium hydroxide analysis anions annealing arsenate arsenite barium and calcium barium nitrate boiling borate calcium nitrates carbonate Chem Chemical chloride chromate colour complete consisting containing Cool crystals cyanide Detection determine dilute discard dissolve distortion drops effect excess fatigue ferric ferrocyanide Filter filtrate flask fluoride followed formate forms give grams heat Heavy hydrogen hydroxide increase indicates insoluble Institution ions lead Lecture London material Mechanical metals methods minutes mixture moulds nickel obtained oxalate Patent phosphate plant portion potassium precipitate precipitate forms precipitation is complete present produced published reduction removed salts saturated Save Sensitivity Separation September shown silver Slight sodium soluble solution solution containing step studied Sub-Group sufficiently sulphide sulphuric acid tartrate temperature test tube thiocyanate thiosulphate tion various volume Wash the residue white precipitate wire Yellow