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17. Explain Hyperconjugation effect.18. Explain the preparation of Lassaigne's extract. |
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Answer» 17.Hyperconjugation is the stabilising interaction that results from the interaction of the electrons in a σ-bond (usually C-H or C-C) with an adjacent empty or partially filled p-orbital or a π-orbital to give an extended molecular orbital that increases the stability of the system. 18.Preparation of Lassaigne’s Extract:A small pellet of metallic sodium together with a little of the substance is heated to red hot in an ignition tube. It is then suddenly plunged into about 10ml of distilled water in a china dish. The mixture is boiled well and filtered. The filtrate is the Lassaigne's extract. |
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