 | United States. Bureau of Public Roads - 1901 - Liczba stron: 880
...be noticed that the pink color is confined to certain spots or nodes on the surface. The pink color of the indicator is a proof of the presence of hydroxyl...presence of hydroxyl ions by the formation of a pink color will not be out of place.* Phthalic acid was first prepared by Laurent in 18.36 by the oxidation... | |
 | American Electrochemical Society - 1907 - Liczba stron: 510
...be noticed that the pink color is confined to certain spots or nodes on the surface. The pink color of the indicator is a proof of the presence of hydroxyl ions and thus indicates the negative poles. Since phenolphthalein shows only the nodes where solution of iron and subsequent oxidation can not... | |
 | United States. Bureau of Public Roads - 1908 - Liczba stron: 782
...be noticed that the pink color is confined to certain spots or nodes on the surface. The pink color of the indicator is a proof of the presence of hydroxyl ions, and thus indicates the negative poles. It may be added that some specimens of steel exhibit this phenomenon much more quickly and distinctly... | |
 | Allerton Seward Cushman, Henry Alfred Gardner - 1910 - Liczba stron: 402
...be noticed that the pink color is confined to certain spots or nodes on the surface. The pink color of the indicator is a proof of the presence of hydroxyl ions, and thus indicates the negative poles. It may be added that some specimens of steel exhibit this phenomenon much more quickly and distinctly... | |
 | Francis Jones Pond, Jerome John Morgan - 1911 - Liczba stron: 394
...is noticed that the pink color is confined to certain spots or nodes on the surface. The pink color of the indicator is a proof of the presence of hydroxyl ions and thus indicates the negative poles. These pink nodes or spots indicate the points where- solution of iron and subsequent oxidation does... | |
 | American Society for Testing Materials - 1907 - Liczba stron: 808
...be noticed that the pink color is confined to certain spots or nodes on the surface. The pink color of the indicator is a proof of the presence of hydroxyl...with the modern theory of indicators and therefore anexplanation of the manner in which phenol phthalein shows the presence of hydroxyl ions by the formation... | |
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... been added, a pink color is developed. If the solution is allowed to stand perfectly quiet it will be noticed that the pink color is confined to certain spots or nodes on the surface. The pink color of the indicator is a proof of the presence of hydroxyl... 