A Laboratory Guide for a Twenty Weeks Course in General Chemistry Containing D
A Laboratory Guide for a Twenty Weeks Course in General Chemistry Containing D
George Willard Benton
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Pour on the charcoal about 10 c c of a solution of red aniline, and catch the filtrate in a clean tube. (?) As soon as the solution has passed through, pour on the same or a fresh portion (the first will do) about 5 c c of a solution of potassium bichromate, K 2 Cr 2 O 7, and catch the filtrate in a clean tube. (?) The first is an organic color; the second, inorganic. (?) Experiment 97. Hydrocarbons. Methane or Marsh Gas, CH 4 . Fit a test-tube with a cork, and a delivery tube fitted with a jet.... Place in the tube about 5 c c of a mix- ture of 2 pts. Of sodium acetate, NaC 2 H 3 O 2 ; 8 pts. Of sodium hydroxide, NaOH ; and 2 pts. Of calcium oxide, CaO. 100 LABORATORY GUIDE IN CHEMISTRY. Heat the tube and contents carefully, but strongly and persistently, bringing the jet near the flame to ignite the gas which is evolved. Note the odor of gas (?) and flame. (?) In this reaction is the calcium oxide changed? Compare with the action of manganese dioxide in Exp. 25. (?) Complete the equation NaC 2 H 3 O 2 + NaOH == Na 2 C0 3 + ?
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