A text-book on chemistry. For the use of schools and colleges (1866)
Draper, Henry, 1837-1882 · New York, Harper & brothers · leaf 401
tube, the neck is broken off. The nitrogen in organic compounds may be determ-ined either as free gas or as ammonia. In the formercase, the apparatus Fig. 297 is used. The eombustion- Fia. 207 … tube is two feet long, closed at one end like a test-tube.At the closed end, n, dry bicarbonate of soda is placedfor six inches, then an inch and a half of oxide of cop-per. These are followed by a weighed quantity of thedried organic substance that has been ground with warmoxide of copper, a…
Chemistry · Physics
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