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Problem differentiating

Posted: Wed Oct 03, 2018 8:57 pm
by daniella_knight1I
So question, when do you know if it's asking for the limiting reactant vs. % yield? I keep having trouble trying to grasp what some problems are asking from me so I'd like some clarification to keep my eye out for in the future.

Re: Problem differentiating

Posted: Wed Oct 03, 2018 9:07 pm
by Brandon_Tran_2E
Usually limiting reactant questions will ask you how much of a product will be produced when ____ grams of Reactant A reacts with ____ grams of Reactant B. (For example A + B --> C + D). After finding the limiting reactant, use that reactant to calculate for the amount of product asked from the question (this is your theoretical yield). % yield is usually the follow up question in which the question gives you the actual yield (from an experiment). % yield = actual yield / theoretical yield x 100 and the answer is never over 100%.