1. a. Answer the below with reference to the structures shown in Figure 1. (i) Predict the chemical shift position of H^ in the 'H NMR spectra of cach of the structures (1) (2) and (3). With the use of appropriate resonance structures account for the trend you propose (511 (ii) For structure (3) state the expected multiplicity of the H^ proton resonance. Draw, and label a splitting diagram and use it to account for the multiplicity you propose. [4 m (ii) Explain how the 'H NMR spectrum of compound (3) recorded in CDCl; plus a few drops of D20 is expected to differ from the spectrum of the same compound recorded in CDC13. Include an equation in your answer. (4 mc H-CH3 NO2 NO2 N HA HA HA ON (1) (2) Figure 1 (3 )