C 37 02 bai toan ve amino axit

www.tuhoc.edu.vn axit (COOH)a R (COONa)a + aNaOH (NH2)b NCOOH R NNH aH2O nNaOH nA.A a (COOH)a R + (NH2)b (NH2)b (COONa)a + bHCl R (NH3Cl)b nHCl nA.A b VD1: 2N)bR(COOH)a mNaOH 40 100 1, (gam) nNaOH nA.A nHCl nA.A 1, 40 nNaOH 0, 04 0, 02 0, 02 0, 02 0, 04 (mol) H2NR(COOH)2 3NR(COOH)2 MY = htttp://tuhoc.edu.vn/blog mY nY mY nX 3, 67 0, 02 183,5 MR 41 (R C3H5) 2NC3H5(COOH)2 www.tuhoc.edu.vn A) 1, B) 2, C) 1, D) 2, 2 a–R–(NH2)b A) HOOC–CH2–NH2 C) HOOC–CH(NH2)2 0,1 B) (HOOC)2CH–NH2 D) (HOOC)2C(NH2)2 A) H2NCH2COOH C) H2NC3H6COOH B) H2NC2H4COOH D) H2NC3H4COOH A) H2NCH2COOH C) H2NC3H6COOH B) H2NC2H4COOH D) H2NC3H4COOH A) H2NCH2COOH C) H2NC3H6COOH B) H2NC2H4COOH D) H2NC3H4COOH A) lysin C) axit glutamic B) glyxin D) alanin htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn Cho 0,1 mol α ađ i 0,2 mol NaOH thu đư ađ A) HOOC–CH(NH2)–COOH B) HOOC–CH2–CH(NH2)–COOH C) HOOC–(CH2)2–CH(NH2)–COOH D) HOOC–(CH2)3–CH(NH2)–COOH 100 ml α ng đ ađ ch NaOH 0,1 M thu đư i bazơ Y1 Cho Y1 tác ađ ch HCl 1,46 % thu đư i lư u sau đúng: A) X alanin B) hai nhóm COOH C) D) X H2N–CH2CH2–COOH m1 2 A) C5H9O4N C) C5H11O2N – m1 B) C4H10O2N2 D) C4H8O4N2 A m1 – m2 nhóm amino cacboxyl X A) B) C) D) htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn R (COOH)a NaOH ↽ (NH3Cl)b HCl ⇀ R (COOH)a NaOH ↽ (NH2)b ⇀ R HCl (COONa)a (NH2)b amino axit VD2: Cho 0,1 mol aR(NH2)b R (COOH)a HCl (1) (NH2)b R (COOH)a (NH3Cl)b NaOH (2) R (COONa)a (NH2)b amino axit 100 40 300 nHCl 0,1 0,1 (mol); nNaOH b nHCl nA.A nNaOH nY a b a=2 Do MX = 147 R 0,1 0,1 0,3 (mol) nNaOH nA.A 0,3 0,1 2RNH2 MR + 16 = 147 MR = 41 2C3H5NH2 (COONa)a HCl (NH2)b – –COONa + HCl R R C3H5 (COOH)a (NH3Cl)b –COOH + NaCl htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn B Cho A) lysin B) glyxin C) alanin D) axt glutamic C A) H2C–C3H6–COOH C) (H2N)2C3H5–COOH B) (H2N)2C5H9–COOH D) H2N–C3H5(COOH)2 D A) Lys B) Glu C) Gly D) Ala E A) C2H5NO2 C) C6H14N2O2 B) C5H9NO4 D) C3H7NO2 F Cho 0,15 mol H2NC3H5(COOH)2 (axit glutamic) vào 175 ml dung A) 0,70 B) 0,50 C) 0,65 D) 0,55 A) 44,65 B) 50,65 C) 22,35 D) 33,50 G htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn Câu B Câu A B A A A B C A C D A D C C E B B F C A G A htttp://tuhoc.edu.vn/blog