 ... solution. When the precipitation approaches its end, or when the precipitate commences readily to subside, some drops of a neutral solution of nitrate of silver are deposited on a porcelain plate, and the...  A Manual of Practical Assaying - Стр. 399авторы: John Mitchell (F.C.S.) - 1868 - Страниц: 697Полный просмотр - Подробнее о книге
 | Henry Minchin Noad - 1864 - Страниц: 742
..."Journal'). — A standard solution of bichromate is formed by dissolving 14'730 grammes of the pure salt in sufficient water to form one litre. One cubic centimetre...this solution precipitates 0'0207 gramme of lead. The lead to be analysed is dissolved in the minimum of nitric acid, the solution diluted with water,... | |
 | Henry Minchin Noad - 1864 - Страниц: 706
...'Journal-)- — A standard solution of bichromate isformed by dissolving 14-730 grammes of the pure salt in sufficient water to form one litre. One cubic centimetre of this solution precipitates O0207 gramme of lead. The lead to be analysed is dissolved in the minimum of nitric acid, the solution... | |
 | John Mitchell (F.C.S.) - 1868 - Страниц: 840
...by Hempel, two nitrations and washings. The present process is a more direct one. Dissolve 1 1 730 grammes of pure bichromate of potash in sufficient...excess of acetate of soda added, and the solution pwipitated by the bichromate of potash solution. When the precipitation approaches its end, or when... | |
 | William Crookes - 1871 - Страниц: 498
...this solution precipitates o-o2o7 grm. of lead. In the analysis of metallic lead, a certain quantity should be dissolved in a minimum of nitric acid, the...carefully neutralised with ammonia or carbonate of sodium, an excess of acetate of sodium added, and the solution precipitated by the bichromate of potassium... | |
 | William Crookes - 1871 - Страниц: 500
...washings. The following process is more simple :—Dissolve I4-73O grms. of pure bichromate of potassium in sufficient water to form one litre. One cubic centimetre of this solution precipitates o-o2o7 grm. of lead. solution. When the precipitation approaches its end, or when the precipitate commences... | |
 | Francis Sutton - 1871 - Страниц: 454
...0'0207 gm. lead. In the analysis of metallic lead, a certain quantity of it should be dissolved in its minimum of nitric acid, the solution diluted with water, carefully neutralised with ammonia or sodic carbonate, and excess of sodic acetate added, and the solution precipitated by the bichromate... | |
 | Andrew Alexander Blair - 1876 - Страниц: 456
...litre of water : 1 cc of this solution precipitates 0•0207 gm. of lead. In the analysis of metallic lead, a certain quantity of it should be dissolved...with water, carefully neutralised with ammonia or sodic carbonate, excess of sodic acetate added, and the solution precipitated by the bichromate solution.... | |
 | Francis Sutton - 1876 - Страниц: 450
...litre of water : 1 cc of this solution precipitates 0-0207 gm. of lead. In the analysis of metallic lead, a certain quantity of it should be dissolved...with water, carefully neutralised with ammonia or sodic carbonate, excess of sodic acetate added, and the solution precipitated by the bichromate solution.... | |
 | Francis Sutton - 1882 - Страниц: 524
...liter of water : 1 co of this solution precipitates 0-02064 gm. of lead. In the analysis of metallic lead a certain quantity of it should be dissolved...nitric acid, the solution diluted with water, carefully neutralized with ammonia or sodic carbonate, excess of sodic acetate added, and the solution precipitated... | |
 | William Crookes - 1886 - Страниц: 764
...this solution precipitates 0-0207 gramme of lead. In the analysis of metallic lead, a certain quantity should be dissolved in a minimum of nitric acid, the...with water, carefully neutralised with ammonia or sodium carbonate, an excess of sodium acetate added, and the solution precipitated by the potassium... | |
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