Organic 2 Review Problem 363

Organic 2 Review Problem 363 - REACTIONS AND IDENTIFICATION...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
REACTIONS AND IDENTIFICATION 347 SPECIAL REACTIONS. Cyclohexanone. This is readily oxidised by a K 2 Cr 2 O 7 -H 2 SO 4 mixture to the crystalline adipic acid, m.p. 152°, precisely as for cyclohexanol (p. 335). Benzophenone. To 0-5 g. of benzophenone add i g. of naphthalene (as a solvent) and heat until completely molten. Add a small piece of sodium and heat again. The surface of the sodium becomes green, and the colour [which is that of the free radical, (C 8 Hj) 2 C-ONa] spreads throughout the molten mass on strong heating. Section 14. (A) CarboxylicAcids. — COOH. ( c /. Tables, pp. 543-545) (B) Sulphonic Acids. -SO 2 OH. ( c /. Table XIV, p. 548) (A) CARBOXYLIC ACIDS. Formic, acetic, oxalic, sucrinic, lactic, tartaric, citric; benzoic, salicylic (and other substituted benzoic acids); phthalic and cinnamic acids. Physical properties. All are colourless crystalline solids except formic acid, acetic acid (m.p. 18° when glacial) and lactic acid (m.p. 18°, usually a syrup). Formic acid (b.p. 100°) and acetic acid (b.p. 118°)
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online