After combustion analysis and mass spectrometry, the molecular formula of an unknown compound was determined to be C15H1402. The first two suggested structures are shown as A and B and the IR spectrum obtained, Fig. 2, can be used to distinguish between A and B. Explain, with reasoning, which of the two structures is the correct one. aio IR Spectrum (thin film) 4000 A 3000 2000 1698 v (cm¹) Fig. 2 B 1600 008 1200 00S 800 008

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Q: 100 43 71 50 27 114 58 20 40 60 80 100 120 mlz D00 3800 3600 3400 3200 3000 2800 2600 2400 2200 2000…

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Q: 3420 IR Spectrum (liquid film) 1742 4000 3000 2000 1600 1200 800 v (cm")

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NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.