A Scheme for the Detection of the More Common Classes of Carbon Compounds
The book A Scheme for the Detection of the More Common Classes of Carbon Compounds was written by author Frank Edwin Weston Here you can read free online of A Scheme for the Detection of the More Common Classes of Carbon Compounds book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Scheme for the Detection of the More Common Classes of Carbon Compounds a good or bad book?
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Heat I gram solid KOH with 0-5 c. C. H 2 O in a crucible till melted, then add about O'$ gram of acid ; carefully heat till effer- vescence ceases and mass nearly solidifies (do not char). Boil fused mass with 20 c. C. Water, and filter. The filtrate contains the K salts of the acids formed during the fusion. These may be tested for Acrylic acid, b. P. 139. CH 2 = CH. COOH + 2 KOH = HCO 2 K + CH 3 C0 2 K + H 2 . Crotonic acid, m. P. 72. CH 3 . CH = CH. CO 2 H + 2KOH = CH 3 C0 2 K + CH 3 C0 2 K ...+ H 2 . Angelic acid, m. P. 45. ^'^^C. CO. H + 2KOH = CH 3 . CO 2 H + CH 3 . CH 2 CO 2 K + H 2 . Oleic acid, m. P. 14. Yields palmitic and acetic acids. Cinnamic acid, m. P. 133. C 6 H 5 CH = CH. CO 2 H + 2KOH - C 6 H 5 C0 2 K + CH 3 C0 2 K + H 2 . o-Coumaric acid, m. P. 208 (with decomp. ). Yields C 6 H 4 *y and CH 3 CO 2 H. Alk. Salt solns. Yellow with green fluorescence. C. HYDROXY ACIDS. (a) To a neutral solution add 2 or 3 drops of 10 / FeCl 3 soln. (a) Hydroxy acids produce a yellow coloration ; a-hydroxy acids a strong yellow colour.
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