... = 2 ,19 + 62.0,03.3 = 7,77 (gam) Chn A Cõu 16 : Phn trm lng nit phõn t anilin bng? A 15 ,05% B 15 ,73% C 18 ,67% D 12 ,96% Hng dn gii: 14 Cụng thc ca anilin: C6H5NH2 %m N 10 0% 15 ,05% 12 .6 14 Chn ... H2N-CH(CH3)-COOH + HCl ClH3N-CH(CH3)-COOH 0 ,1 0 ,1 ClH3N-CH(CH3)-COOH +NaOH H2N-CH(CH3)-COONa + NaCl + H2O 0 ,1 0 ,1 0 ,1 mmui = 0 ,1. 111 +0 ,1. 58,5 = 16 ,95 (gam) Cỏch 2: H2N-CH(CH3)-COOH (M = 89 ... 200 ml dung dch NaOH 1M thu c dung dch cha m gam mui Giỏ tr ca m l: A 11 ,70 B 18 ,75 C 11 ,10 D 16 ,95 Hng dn gii: Cụng thc - aminopropinoic cú dng: H2N-CH(CH3)-COOH Cỏch 1: H2N-CH(CH3)-COOH +...