Posted by Jack on Tuesday, November 1, 2011 at 10:33am.
This is a limiting reagent problem. How do I know that? Because amounts of BOTH reactants are given. I solve these problems by solving two stoichiometry problems. First I use 1000g ethylene and all of the steam needed and calculate moles ethanol produced. Then I use 14 g steam and all of the ethylene needed and calculate the moles ethanol produced. There is a different answer produced and both answers can't be correct; however, in limiting reagent problems the smaller value is ALWAYS the correct one and the reagent producing that value is the limiting reagent. Here is a worked example of a stoichiometry problem. Just follow the steps. Post your work if you get stuck.
http://www.jiskha.com/science/chemistry/stoichiometry.html
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