Just the same as for any stoichiometry problem. Here is an example. The answer you get is the theoretical yield.
http://www.jiskha.com/science/chemistry/stoichiometry.html
Write the overall reaction equation for the synthesis of aluminum potassium sulphate dodecahydrate, then determine the theoretical yield.
2Al+2KOH+4H2SO4+22H2O --> 2KAl(SO4)2*12H20
I don't know how to calculate theoretical yield from this. Please help?
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