3. In the following acid base reactions, circle the side of the equilibrium that is favored overall a. NH NH2 b. ii. Which site on the following molecule is most likely to be protonated first? Explain your reasoning N: 111· a-Determine the structure of a compound with molecular formula C5H1 3NO that in IR shows stretch peaks for-NH2, C-N and C-O but not OH stretch. The H NMR spectrum shows the signals at the following chemical shifts (δ, ppm): 3.50 triplet; 3.45 quartet; 2.80 triplet; 1.72 quintet; 1.26 broad singlet; 1.20 triplet b- Indicate what protons are the ones producing the two most deshielded signals.