(Solved): Shown below are the four 1H NMR spectra of samples taken from students. Please ignore the peaks that ...

Shown below are the four 1H NMR spectra of samples taken from students. Please ignore the peaks that contain an asterisk above them or peaks with integration values that are very low (such as 0.1). They are peaks from impurities in the samples. The number above each peak represents the chemical shift. The number below each peak represents the integration. Note that they are relative. In other words, they do not necessarily indicate the number of hydrogens associated with that peak but the ratio between all these integrations is what matters. Choose the spectrum that belongs to the ester 2-Methylpropyl propanoate.