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Posted by on Saturday, September 7, 2013 at 12:39pm.

For the reaction 2C6H6+15O2 =12CO2+6H2O, what is the maximum amount of CO2 which could be formed from 5.12 g of C6H6 and 12.28 g of O2?

  • AP Chemistry - , Saturday, September 7, 2013 at 6:24pm

    This is a limiting reagent problem. I now that because amounts are given for BOTH reactants.
    Convert 5.12g C6H6 to mols. mols = grams/molar mass.
    Do the same for 12.28g O2.

    Using the coefficients in the balanced equation, convert mols C6H6 to mols CO2.
    Do the same for mols O2 to mols CO2.
    It is likely that the two values for mols CO2 will not agree which means one of them is wrong; the correct value in limiting reagent problems is ALWAYS the smaller value and the reagent producing that value is the limiting reagent.
    Now convert mols CO2 to grams. g = mols x molar mass.
    Post your work if you get stuck.

  • AP Chemistry - , Tuesday, September 13, 2016 at 11:17pm


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