166 DIY Science: Illustrated Guide to Home Chemistry Experiments
RQEWEvI UESTIOnS
q 1 : List at least five sources of error in this experiment.
q: 2 If you repeated this experiment using 2.0 g of iron and 1.5 g of sulfur as the reactants, would you expect the product to be
attracted to a magnet? Why?
q: 3 Upon running this experiment, a student obtains an actual yield of 113.4%. Ruling out weighing errors, what is the most likely
source of this error?
q: 4 How might you adjust the conditions of this experiment to maximize the amount of FeS produced as product while minimizing
the production of pyrrhotite (Fe(1–x)S) and mackinawite (Fe(1+x)S)?