Reshav Asked a Question
June 18, 2020 9:04 pmpts 30 pts
please explain will it have 5 signals or3 signals PROBLEM-SOLVING STRATEGY Determining the Number of Signals in an H NMR Spectrum Uow many signals WOuld yOu CApcot o Sce ln the HNMR spectrum of ethylbenzene? CH,CH2 To determine the number of signaiS you would expect to see in the spectrum, replace each hydrogen in turn by another atom (here we use Br) and name the resulting compound. The number of different names corresponds to the number of signals in the 'H NMR spectrum. We get five different names for the bromosubstituted ethylbenzenes, so we expect to see five signals in the 'H NMR spectrum of ethylbenzene. Br CH CH2 CHCH Br BrCH,CH 1-bromo-1-phenylethane 1-bromo-2-ethylbenzene 1-bromo-2-phenylethane Br CH,CH CH,CH -Br CH,CH CH CH2 Br Br 1-bromo-2-ethylbenzene 1-bromo-3-ethylbenzene 1-brom0-4-ethylbenzene 1-bromo-3-ethylbenzene NOW use the strategy you have just learned to solve Problems 3 and 4.
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  • Reshav
    it means that hydrogend of benzenze or aromatic compounds will give only one signal always
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  • Dinesh khalmaniya Best Answer
    reference YR sharma. it given 3 signals and also most of the books given same.
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  • Dinesh khalmaniya
    but we see practically, then we will found that aromatic Hs give one peak. because all aromatic peaks obtained at same ppm
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  • Dinesh khalmaniya thankyou
    check it
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  • Dinesh khalmaniya thankyou
    theoretically it will gives 5 signals. wait I'm sending you explanation
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