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The simplest method would be fractional distillation: if you have a mixture of miscible liquids with different boiling points, as is the case in your question, then you can heat them slowly. When the boiling point of the most volatile compound in the mixture is reached, it begins to boil and the temperature does not increase until it has all boiled off. The ...

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Grignard reagent acts as strong base /Nucleophile due to polar nature of C-metal bond.(The carbon is electronegative compared to metal so it pulls off bonded electrons to it creating partial negative charge on it) Now to your question: Br won’t be replaced with GR as Br lone pairs are in conjugation with benzene.(Vinyl halide cannot undergo nucleophile ...

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Important information before understanding the reason for steric inhibition of resonance and the ortho effect In general, resonance stabilizes a molecule. But in the case of carboxylic acids, the conjugate base (anion after losing $\ce{H+}$) there are two equivalent resonance structures. Take the example of acetic acid, $\ce{CH3COOH}$, and thus acetate ion, ...

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