 | Paul Caspar Freer - 1895 - 304 σελίδες
...to it three or four drops of carbon bisulphide, and then add a little of a solution of chlorine in water. Close the mouth of the tube with the thumb, and shake. Change of color in the carbon bisulphide ? * What change takes place ? b. Repeat a, using a solution... | |
 | Rufus Phillips Williams - 1897 - 430 σελίδες
...solution of pyrogallol — pyrogallic acid, C6H3(OH)3 — in a little potassium hydrate solution. Cover the mouth of the tube with the thumb and shake it vigorously. Open it under water. If the water rises, have the level inside and outside the tube the same, then... | |
 | Rufus Phillips Williams - 1897 - 316 σελίδες
...to it three or four drops of carbon bisulphide, and then add a little of a 4 solution of chlorine in water. Close the mouth of the tube with the thumb, and shake. Change of color in the carbon bisulphide ? * What change takes place £-" b. Repeat a, using a solution... | |
 | Raymond Bedell Brownlee - 1908 - 168 σελίδες
...6.1 (e) Remove the delivery tube and allow the test-tube to cool. Nearly fill the test-tube with hot water, close the mouth of the tube with the thumb, and shake. Pour the muddy liquid on a moistened filter paper fitted to a funnel. Collect the clear liquid (filtrate~)... | |
 | William McPherson, William Edwards Henderson - 1915 - 292 σελίδες
...test its combustibility and its conduct towards bromine water. How does it compare with methane ? 118. Acetylene, a. With your pliers pick up a small piece...vigorously. Is the bromine absorbed by the acetylene ? 119. lodoform. Pour 2 or 3 cc. of a solution of sodium hydroxide into a test tube, add a crystal... | |
 | William McPherson, William Edwards Henderson - 1915 - 292 σελίδες
...mouth of the tube. How does the flame compare with that of burning ethylene and burning methane ? b. Collect another test tube full of the gas, quickly...vigorously. Is the bromine absorbed by the acetylene ? 119. lodoform. Pour 2 or 3 cc. of a solution of sodium hydroxide into a test tube, add a crystal... | |
 | 1906 - 356 σελίδες
...of the Lozenges in a mortar until reduced to powder, and drop into a test tube half filled with hot water. Close the mouth of the tube with the thumb and shake until the powder dissolves. The odor of Chloroform will then be quite perceptible. The sedative action... | |
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... of water. What action takes place ? Test the reaction of the water with litmus paper. Holding the test tube in an inverted position (why?), remove it from the water and quickly ignite the gas at the mouth of the tube. How does the flame compare with... 