Tell prcisely how would you use H NMR spectra to distinguish between these compo

Question

Tell prcisely how would you use H NMR spectra to distinguish between these compounds CH3-COO-CH2CH3 and CH3CH2-COO-CH3 Most importantly what is the theory behind the answer

Explanation / Answer

1) CH3-COO-CH2CH3 This molecule name is Ethyl acetate , it shows 3 H NMR signals CH3 -------> singlet at 2.1 ppm CH3 -------> triplet at 0.9 ppm and CH2 -------> quartet at 3.6 ppm. 2) CH3CH2-COO-CH3 this molecule name is Methyl proponiate , it shows 3 H NMR signals CH3 -------> singlet at 3.6 ppm CH3 -------> triplet at 0.9 ppm and CH2 -------> quartet at 2.1 ppm. these two compounds have different set of protans of CH2 one shows quartet at 3.6 ppm and anther one shows quartet at 2.1 ppm in H NMR spectrum.

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