(1) ClH3NCH2COOH + 2NaOH → H2NCH2COONa + NaCl + H2O

→ 2 muối: H2NCH2COONa, NaCl

(2) H2NCH(CH3)-CONH-CH2COOH + 2NaOH → H2NCH(CH3)-COONa + H2N-CH2COONa + H2O

→ 2 muối: H2NCH(CH3)-COONa, H2N-CH2COONa

 (3) CH3-NH3NO3 + NaOH → NaNO3 + CH3-NH2 + H2O

→ 1 muối: NaNO3

(4) (HOOCCH2NH3)2SO4 + 4NaOH → 2H2N-CH2-COONa + Na2SO4 + 4H2O

→ 2 muối: H2N-CH2-COONa, Na2SO4

(5) ClH3N-CH2-CONH-CH2-COOH + 3NaOH → 2H2N-CH2-COONa + NaCl + 2H2O

→ 2 muối: H2N-CH2-COONa, NaCl

(6) CH3COOC6H5 + 2NaOH → CH3COONa + C6H5ONa + H2O

→ 2 muối: CH3COONa, C6H5ONa

Vậy có 5 chất tác dụng với NaOH dư sinh ra 2 muối.

ClH3N- CH2-COOH; H2N- CH( CH3)- CO-NH-CH2-COOH; (HOOC- CH2- NH3)2SO4;  ClH3N- CH2-CONH-CH2-COOH; CH3-COO-C6H5.

=> có tất cả 5 chất

ClH3N- CH2-COOH + NaOH → NH2- CH2-COONa + NaCl + H2O

H2N- CH( CH3)- CO-NH-CH2-COOH + 2NaOH → H2N- CH(CH3)- COONa + NH2 –CH2-COONa + H2O

(HOOC- CH2- NH3)2SO4 + 4NaOH → 2NH2-CH2-COONa + Na2SO4 + 2H2O

ClH3N- CH2-CONH-CH2-COOH + NaOH → 2NH2-CH2-COONa + NaCl + H2O

CH3-COO-C6H5 + NaOH → CH3-COONa + C6H5ONa + H2O