Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 165
... hydrogen sulphide until precipitation is complete . Yellow insoluble arsenious sulphide indicates the presence of arsenite . Filter the solution and test for complete precipitation with hydrogen sul- phide . Filter again if necessary ...
... hydrogen sulphide until precipitation is complete . Yellow insoluble arsenious sulphide indicates the presence of arsenite . Filter the solution and test for complete precipitation with hydrogen sul- phide . Filter again if necessary ...
Strona 168
... hydrogen chloride . As much as 500 mg . of thiocyanate ion in 20 cc . of water is destroyed completely and rapidly without the application of heat by 5 cc . of concentrated sulphuric acid . This concentration of sulphuric acid will also ...
... hydrogen chloride . As much as 500 mg . of thiocyanate ion in 20 cc . of water is destroyed completely and rapidly without the application of heat by 5 cc . of concentrated sulphuric acid . This concentration of sulphuric acid will also ...
Strona 176
... Hydrogen sulphide . - Gute - Hoffnung- shutte Oberhausen , Rhineland , Germany . Hydrogen sulphide is obtained by the action of steam at high pressure , say 35 or 45 atmo- spheres , and raised temperature on sulphur or substances which ...
... Hydrogen sulphide . - Gute - Hoffnung- shutte Oberhausen , Rhineland , Germany . Hydrogen sulphide is obtained by the action of steam at high pressure , say 35 or 45 atmo- spheres , and raised temperature on sulphur or substances which ...
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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