 | United States. Office of Experiment Stations - Agricultural experiment stations - 1898 - 1232 pages
...filter as quickly as possible (a plain tilter without auction). Wash the precipitate by décantation twice with the nitric acid solution, once with the...to the filter and wash with 150 cc. of cold water. \Vash the precipitate with the filter iuto the beaker, add an excess of the standard potassium hydroxid... | |
 | Analytical chemistry - 1927 - 1020 pages
...yellow precipitate dissolved in a very few seconds. Wash off the rod and the sides of the flask and add a few drops of the phenolphthalein solution and titrate the excess of standard NaOH with the standard HNO3. The strength of the standard NaOH and the standard HNO3 in terms... | |
 | United States. Office of Experiment Stations - Agricultural experiment stations - 1898 - 1304 pages
...filter sis quickly as possible (a plain filter without suction). Wash the precipitate by decantatiou twice with the nitric acid solution, once with the...the standard potassium hydroxid solution and a few droj* of the phenolphthaleiu solution, and titrate the excess of alkali by adding the standard nitric... | |
 | American Society for Testing Materials - Building materials - 1922 - 1032 pages
...yellow precipitate dissolved in a very few seconds. Wash off the rod and the sides of the flask and add a few drops of the phenolphthalein solution and titrate the excess of standard NaOH with the standard HNO3. The strength of the standard NaOH and the standard HNO3 in terms... | |
| |
... flask in which the original precipitation was made, add 25 cc. of distilled water and an excess of the standard sodium hydroxide solution. By using a long glass rod, the paper can be pulped and the yellow precipitate dissolved in a very few seconds.... 