| 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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