 | Louis Munroe Dennis - 1902 - 278 σελίδες
...until the liquid assumes a yellow tint. What change has taken place ? e. Transfer a small portion of the solution to a test tube, and add a few drops of a solution of potassium sulphocyanate. What is the result ? d. To the remainder of the solution add ammonium hydroxide... | |
 | Robert Hart Bradbury - 1912 - 152 σελίδες
...hydrogen sulphide for the following experiments. In each case, place the hydrogen sulphide solution in a test tube and add a few drops of a solution of the substances mentioned. (a) Copper sulphate. (6) Mercuric chloride. (c) Arsenious oxide. In (c) after... | |
 | William McPherson, William Edwards Henderson - 1915 - 292 σελίδες
...test tube about 0.5 cc. of phosphorus trichloride (hood) and add a little water, a drop at a time. What gas is evolved (R) ? Finally, add about 5 cc....solution of silver nitrate. Boil the resulting mixture. A black precipitate forms. Explain. 146. Phosphoric acid. a. Add, in very small portions, about 1 g.... | |
 | William McPherson, William Edwards Henderson - 1921 - 304 σελίδες
...test tube about 0.5 cc. of phosphorus trichloride (hood) and add a little water, a drop at a time. What gas is evolved (R) ? Finally, add about 5 cc....solution of silver nitrate. Boil the resulting mixture. A black precipitate forms. Explain. 143. Phosphoric acid. a. Add, in very small portions, about 1 g.... | |
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Phosphorous acid. Pour into a test tube about 0.5 cc. of phosphorus trichloride (hood) and add a little water, a drop at a time. What gas is evolved (R) ? Finally, add about 5 cc. of water, pour the liquid into an evaporatingdish, and evaporate to a sirupy... 