15.From what starting materials would the following be made? X·Ce E The compound shown is too unstable to isolate Ans:B 16.What would be the proper ranking of the following in order of decreasing acidity(most acidic on left)? A)4>2>1>3 B)3>1>4>2 Page9Page 9 15. From what starting materials would the following be made? N N H2N NH2 A) N2 + H2N NH2 + B) H2N NH2 N2 + + C) Either A or B D) Neither A nor B E) The compound shown is too unstable to isolate Ans: B 16. What would be the proper ranking of the following in order of decreasing acidity(most acidic on left)? OH OH OH CH3 O2N NO2 OH NO2 O2N NO2 1 2 3 4 A) 4 > 2 > 1 > 3 D) 3 > 2 > 4 > 1 B) 3 > 1 > 4 > 2 E) 2 > 4 > 3 > 1 C) 2 > 4 > 1 > 3 Ans: E