Ch_322a_8.016

Ch_322a_8.016 - R-X AgNO 3 ethanol AgX + R + Vinylic and...

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Simple Chemical tests for Alkanes, Alkenes, Alkynes, Alkyl Halides and Alcohols Solubility in concentrated H 2 SO 4 Alkenes, alkynes and alcohols are soluble because they are protonated and form ions. Alkanes and alkyl halides are insoluble . Br 2 in CCl 4 : Discharge of Color At room temperature and in the absence of light, alkenes and alkynes react with a rapid loss of color . Alkanes, alcohols and alkyl halides do not react. Cold, dilute KMnO 4 : oxidation and loss of color Alkenes and alkynes readily hydroxylate causing a rapid loss of color . Alkanes, alkyl halides and alcohols do not react.
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Alcoholic AgNO 3 : Precipitate of AgX Alkyl and allylic halides react rapidly with Ag + to give a precipitate of AgX that is very insoluble.
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Unformatted text preview: R-X AgNO 3 ethanol AgX + R + Vinylic and aryl halides do not readily react. X and R 2 C=CR X AgNO 3 ethanol no reaction Silver Nitrate in Aqueous Ammonia A solution of AgNO 3 in aqueous ammonia produces the complex Ag(NH 3 ) 2 OH, a complex of silver (I). Terminal alkynes (pKa ~ 25) are deprotonated and yield an insoluble silver alkynide: RC C-H + Ag(NH 3 ) 2 + + HO-RC C-Ag + H 2 O + 2NH 3 insoluble black precipitate Silver alkynides dissolve in nitric acid but silver halides do not. Quiz 8.016 An organic compound is soluble in cold, conc. sulfuric acid, but does not decolorize a solution of Br 2 in CCl 4 . Which structure below is consistent with these observations? OH Cl...
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Ch_322a_8.016 - R-X AgNO 3 ethanol AgX + R + Vinylic and...

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