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19 November, 22:35

Calculate the percent yield if 52.9 g of ethanol reacts to produce 26.7 g of ether.

2CH3CH2OH (l) → CH3CH2OCH2CH3 (l) + H2O (l)

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  1. 19 November, 23:00
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    The % yield is 62.7 %

    Explanation:

    Step 1: the balanced equation

    2CH3CH2OH (l) → CH3CH2OCH2CH3 (l) + H2O (l)

    Step 2: Data given

    mass of ethanol = 52.9 grams

    molar mass of ethanol = 46.07 g/mol

    mass of ether = 26.7 grams

    Molar mass of ether = 74.12 g/mol

    Step 3: Calculate moles of ethanol

    Number of moles = Mass / molar mass

    Moles of ethanol = 52.9 grams / 46.07 g/mol

    Moles of ethanol = 1.15 moles

    Step 4: Calculate moles of ether

    For 2 moles of ethanol consumed, we have 1 mole of ether produced

    For 1.15 moles of ethanol consumed, we have 1.15/2 = 0.575 moles of ether produced

    Step 5: Calculate mass of ether

    Mass = moles * Molar mass

    Mass ether = 0.575 moles * 74.12 g/mol = 42.62 grams = theoretical yield

    Step 6: Calculate % yield

    % yield = (26.7 / 42.62) * 100 = 62.7%

    The % yield is 62.7 %
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