NIS – CHEMISTRY. Lecture 65 Percent Yield Ozgur Unal. Percent Yield. Some popcorns remain unpopped.... Similarly, in a chemical reaction, not all the reactants react to produce a product. There can be several reasons for this:
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When you pop a bag of popcorn, do all of the popcorns pop inside the bag?
In our previous calculations, we determined the amounts of the products formed in chemical reactions Theoretical yield
A reaction rarely produces the theoretical yield of product.
The actual yield is the amount of product produced when the chemical reaction is carried out in an experiment.
Example: Solid silver chromate (Ag2CrO4) forms when potassium chromate (K2CrO4) is added to a solution containing 0.500 g of silver nitrate. Determine the theoretical yield of Ag2CrO4. Calculate the percent yield if the reaction yields 0.455 g of Ag2CrO4.