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31 March, 04:00

What is the Percent yield is 4.65 got copper is produced by 1.87 percent yield is 4.65 got copper is produced when 1.87 grams of aluminum reacts with excess copper (11) sulfate

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  1. 31 March, 07:47
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    Percent yield = 69.4%

    Explanation:

    Given dа ta:

    Percent yield = ?

    Actual yield of copper = 4.65 g

    Mass of aluminium = 1.87 g

    Mass of copper sulfate = excess

    Solution:

    Chemical equation:

    2Al + 3CuSO₄ → Al₂ (SO₄) ₃ + 3Cu

    Number of moles of Aluminium:

    Number of moles = mass / molar mass

    Number of moles = 1.87 g/27 g/mol

    Number of moles = 0.07 mol

    Now we will compare the moles of Al with copper.

    Al : Cu

    2 : 3

    0.07 : 3/2*0.07 = 0.105 mol

    Mass of Copper: (Theoretical yield)

    Mass = Number of moles * molar mass

    Mass = 0.105 mol * 63.5 g/mol

    Mass = 6.7 g

    Percent yield:

    Percent yield = Actual yield / theoretical yield * 100

    Percent yield = 4.65 g / 6.7 g * 100

    Percent yield = 69.4%
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