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1 October, 01:17

Calculate the theoretical yield for the bromination of both stilbenes and cinnamic acid, assuming the presence of excess pyridinium tribromide. calculate the theoretical yield for the bromination of both stilbenes and cinnamic acid, assuming the presence of excess pyridinium tribromide.

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  1. 1 October, 02:59
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    cinnamic acid - 150 mg

    cis-stilbene - 100 μL

    trans - stilbene - 100 mg

    pyridinium tribromide - 200-385 mg

    For this dа ta:

    moles of cinnamic acid = 0.150 g/148.16 g/mol = 0.001 mols

    Theoretical mass of dibromoproduct formed = 0.001 mol x 307.97 g/mol = 0.312 g

    cis-stilbene (100 ul = 0.1 ml)

    moles of cis-stilbene = 0.1 ml x 1.01 g/mol/180.25 g/mol = 0.00056 mols

    Theoretical mass of dibromoproduct formed = 0.00056 mol x 340.05 g/mol = 0.19 g

    trans-stilbene

    moles of tran-stilbene = 0.1 g/180.25 g/mol = 0.00055 mols

    Theoretical mass of dibromoproduct formed = 0.00055 mol x 340.05 g/mol = 0.19 g
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