Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 164
... white precipitate is formed . This compound changes from white to yellow , orange , and brown ; finally , a black residue of silver sulphide remains . This colour change of the silver salt is characteristic of thiosulphate . Detection ...
... white precipitate is formed . This compound changes from white to yellow , orange , and brown ; finally , a black residue of silver sulphide remains . This colour change of the silver salt is characteristic of thiosulphate . Detection ...
Strona 166
... precipitate forms in cold solution , fluoride is absent . If a white precipitate forms , add about 1 g . of sodium acetate crystals and 2 cc . of 1 N acetic acid . Shake , and if the precipitate does not dissolve , fluoride is present ...
... precipitate forms in cold solution , fluoride is absent . If a white precipitate forms , add about 1 g . of sodium acetate crystals and 2 cc . of 1 N acetic acid . Shake , and if the precipitate does not dissolve , fluoride is present ...
Strona 169
... white precipitate , in- soluble in nitric acid , forms if chlorate is present . Sensitivity of Chlorate Test . Conc . of C103 ̄ ( g . per cc . ) 0.0040000 0.0020000 0.0005000 0.0002000 0.0001000 0.0000400 0.0000200 0.0000040 0.0000004 ...
... white precipitate , in- soluble in nitric acid , forms if chlorate is present . Sensitivity of Chlorate Test . Conc . of C103 ̄ ( g . per cc . ) 0.0040000 0.0020000 0.0005000 0.0002000 0.0001000 0.0000400 0.0000200 0.0000040 0.0000004 ...
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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