Posted by Jake on Thursday, November 4, 2010 at 12:21pm.
balance the equation:
2C2H6+5O2>>4CO2 + 6H2O
figure the moles in 20 g ethane, and moles in 60 grams O2.
Notice, that you need 2.5x moles O2 as moles ethane. Do you have that much? If more, then ethane is the limiting reactant. If not, thenO2 is limiting.
so if ethane is limiting, then you get 3 times the moles of water that you have of ethane, if O2 is limiting, you get 6/5 the moles you have of O2.
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