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March 30, 2017

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If 50.0 g of silicon dioxide is heated with an excess of carbon, 27.9g of silicon carbide is produced.
SiO2(s) + 3C(s) --> SiC(s) + 2CO(g)

what is the percent yield of this reaction?

  • Chemistry - ,

    Convert 50.0 g SiO2 to moles. moles = grams/molar mass

    Using the coefficients in the balanced equation, convert moles SiO2 to moles SiC.

    Convert moles SiC to grams. grams = moles x molar mass. This is the theoretical yield of SiC in the reaction.

    %yield = (actual yield/theoretical yield)*100 = ??

    The actual yield given in the problem is 27.9 grams SiC.

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