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how to calculate percent yield from nmr. Work at a hood. Yield mol productmol starting material x 100.
The Aldol Condensation Synthesis Of A Chalcone from studylib.net
Not using any other method they are notavailable. Introduction Ethyl acetoacetate EAA a v-ketoester is a colorless liquid with a sweet fruity aroma and flavor. Weigh the products and calculate the percentage yield.
Weigh the products and calculate the percentage yield.
Add 1-2drops of the product under test to the test tube. Yield of the starting material 100 nstarting material nstandard n where nproduct nstandard is the integral ratio of the corresponding 1H NMR peaks and n is the ratio of the standard to the initial amount of starting material in mol. First measure the signal area of the two peaks area A and area B. Ideally you would like to calculate this number using 1 solute multiplet in the spectrum and perhaps take the average concentration value for these to achieve a better representation of the analyte purity.
