1. The label for a bottle of DMSO is missing. This could be regular DMSO or 99% deuterated DMSO. Sketch the observation of proton spectrum and ¹³C spectrum for each compound. Can you tell the difference between them by using 1D proton NMR? Can you tell the difference between them by 1D ¹³C NMR?

Note: I=1 for deuterium.