2.4-dinitrophenylhydrazine reagent:you can say with certainty that the unknown compound: A.is a ketone B.is a ketoneoran aldehyde D.a and c are both correct E.this qualitative test yields ambiguous results:none of the above are correct 14.which is correct in consideration of the main produt of the following reaction? C.No correct product is given 5.Circle(o)the stro one&underline the weakest in each set.(2 points each) a.Nucleophilicity:CHgNH2 CH4 H2O PhCH2S o.Acidity Carbocation Stability Reactivity In SN2 react e.Basicity 第3页共6页第 3 页 共 6 页 2,4-dinitrophenylhydrazine reagent; you can say with certainty that the unknown compound: A. is a ketone B. is a ketone or an aldehyde C. is a methyl ketone D. a and c are both correct E. this qualitative test yields ambiguous results; none of the above are correct 14. which is correct in consideration of the main produt of the following reaction? O O O O A. O O O O B. O O O O C. No correct product is given 15. Circle(o) the strongest one & underline the weakest in each set. (2 points each) a. Nucleophilicity: CH3NH2 CH4 H2O PhCH2S￾b. Acidity C F O H 3 O C H O H O Cl Cl C H O H 2 O F C H O H 3 O C H O H 3 C H2 O c. Carbocation Stability d. Reactivity In SN2 reactions B r C l C l C l e. Basicity