Anonymous
Anonymous asked in Science & MathematicsChemistry · 4 weeks ago

Determine the percent yield to two decimal places if 5.06 g?

Determine the percent yield to two decimal places if 5.06 g of alum are synthesized using 0.41 g of aluminum. (MM Al = 26.98 g/mol; MM alum = 474.38 g/mol)

helpppp

Update:

5.76

2 Answers

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  • 4 weeks ago

    Wouldn't life be so simple if only subscribers who want help would submit all the data that enables the question to be solved.

    After much searching around ( alum is a word that can mean so many things in chemistry) I have concluded that the "alum " produced must be : KAl(SO4)2.12H2O which has molar mass 474.2g/mol according to my calculations

    26.98g Al will produce 474.2g alum

    0.41 g Al will produce 0.41/26.98*474.38 = 7.21g alum

    % yield = 5.76g/ 7.21g * 100%= 79.9% yield.

  • david
    Lv 7
    4 weeks ago

    What is Alum? What chem. formula and a balanced eq. for the formation??

    Without that 'stuff' you cannot do the problem. === or at least a mole ratio from some table somewhere.

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