Methods for Quantitating Impurity

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NMR is a powerful technique for quantitatively determining the composition of a crude product after synthesis, as it provides information about the relative amounts of different components through integration of peaks. Melting point analysis can indicate purity but does not quantify impurities effectively. Thin Layer Chromatography (TLC) is useful for detecting the presence of impurities but is not quantitative regarding their amounts. The integration curve in NMR reflects the area under the peaks, correlating to the number of protons contributing to each signal, which aids in quantification. Understanding these methods is essential for accurate analysis of synthesized compounds.
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Homework Statement


Which of the following allows you to quantitatively determine the composition of a crude product after synthesis? Explain.
a. NMR
b. melting point
c. TLC


Homework Equations


none


The Attempt at a Solution


I know that TLC is used for determining whether an impurity is present or not, so I don't think it can determine how much of an impurity there is. I'm not sure about NMR and melting point though. Please help?
 
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What quantitative methods do you know? How do they work?

What is the integration curve in NMR?
 
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