5. Carboxylic Sodium Effervescence All carboxylic acids give this acids bicarbonate due to test test evolution of CO2 gas Formic acid ( Methanoic Tollens test Effervescence HCOOH is the only carboxylic acid) due to acid that gives this test evolution of HCOOH and CH3COOH CO2 gas HCOOH gives this test . CH3COOH does not give this test 6 Amines Hinsberg test – 10 –Soluble To distinguish primary , sec & Benzene 20 – Insoluble ter amines sulphonyl 30 – does not Alkyl amine – 10 chloride + react with Dialkylamine -20 (N- alkyl NaOH Hinsberg alkanamine) reagent Trialkylamine( N,N – dialkyl Primary alkanamine - 30 amines Very Carbylamine unpleasant test – Alcoholic smelling To distinguish primary amines KOH + CHCl3 isocyanide gas from other amines evolves 1)Ethylamine & Diethylamine Ethylamine gives this test. Diethylamine does not give this test 2) Aniline & Dimethylamine Aniline Aniline gives this test. Diethylamine does not give this test Azodye test – Reddish NaNO2 + HCl orange dye Aniline & Benzylamine + phenol ( 00 Aniline gives this test to 5 0 C) Benzylamine does not give this test. **************************************************************************************** CHAPTER 10 HALOALKANES AND HALOARENES VSA (one mark each)
5. Carboxylic acids Formic acid ( Methanoic acid) Sodium bicarbonate test Tollens test Effervescence due to evolution of CO2 gas Effervescence due to evolution of CO2 gas All carboxylic acids give this test HCOOH is the only carboxylic acid that gives this test HCOOH and CH3COOH HCOOH gives this test . CH3COOH does not give this test 6 Amines Primary amines Aniline Hinsberg test – Benzene sulphonyl chloride + NaOH Carbylamine test – Alcoholic KOH + CHCl3 Azodye test – NaNO2 + HCl + phenol ( 00 to 5 0 C) 10 –Soluble 20 – Insoluble 30 – does not react with Hinsberg reagent Very unpleasant smelling isocyanide gas evolves Reddish orange dye To distinguish primary , sec & ter amines Alkyl amine – 10 Dialkylamine -20 (N- alkyl alkanamine) Trialkylamine( N,N – dialkyl alkanamine - 30 To distinguish primary amines from other amines 1)Ethylamine & Diethylamine Ethylamine gives this test. Diethylamine does not give this test 2) Aniline & Dimethylamine Aniline gives this test. Diethylamine does not give this test Aniline & Benzylamine Aniline gives this test Benzylamine does not give this test. **************************************************************************************** CHAPTER 10 HALOALKANES AND HALOARENES VSA (one mark each)
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