Why is it difficult to predict chemical shift for hydroxyl protons in 1HNMR ? Chemical shift of protons on oxygen atoms depends on solution conditions Protons on oxygen atoms are not detectable by 1HNMR Hydroxyl protons are too light to be observed The magnet on most instruments is not strong enough to allow hydroxyl protons to be detected Question 2 1 pts What can changing the sample solvent do in an 1H NMR spectrum? Change splitting for certain peaks Change the sample concentration Alter the integration ratios of peaks with respect to each other Evaporate your sample Question 3 1 pts What possible advantage does IR have over NMR spectroscopy? IR may show functional groups more clearly than NMR Less sample is needed for IR than for NMR IR may be done on gaseous samples whereas NMR cannot IR may be done at room temperature whereas NMR cannot