Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3779Chemical news office., 1932 |
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Strona 166
... sodium acetate crystals and 2 cc . of 1 N acetic acid . Shake , and if the precipitate does not dissolve , fluoride is present . If small crystals adhere to the wall of the test tube , this is still better evidence that the substance ...
... sodium acetate crystals and 2 cc . of 1 N acetic acid . Shake , and if the precipitate does not dissolve , fluoride is present . If small crystals adhere to the wall of the test tube , this is still better evidence that the substance ...
Strona 167
... sodium hydroxide solu- tion . If all of the residue does not dissolve , pour the filtrate over the paper a second time . Add a few more drops of sodium hydroxide , if necessary , to dissolve all of the residue . To the clear filtrate ...
... sodium hydroxide solu- tion . If all of the residue does not dissolve , pour the filtrate over the paper a second time . Add a few more drops of sodium hydroxide , if necessary , to dissolve all of the residue . To the clear filtrate ...
Strona 169
... sodium carbonate . Add 3 or 4 cc . of a saturated solution of lead nitrate , and then add a solution of silver nitrate until precipitation is complete . Filter , and divide the filtrate in two parts . 4. Detection of Chlorate . To one ...
... sodium carbonate . Add 3 or 4 cc . of a saturated solution of lead nitrate , and then add a solution of silver nitrate until precipitation is complete . Filter , and divide the filtrate in two parts . 4. Detection of Chlorate . To one ...
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