Cho từng chất: NH2-CH2-COOH; CH3COOH; CH3COOCH3

* Hướng dẫn giải

Đáp án C

${\mathrm{NH}}_2-{\mathrm{CH}}_2-\mathrm{COOH} + \mathrm{NaOH} \stackrel{}{\to }{\mathrm{NH}}_2-{\mathrm{CH}}_2-\mathrm{COONa} + {\mathrm{H}}_2\mathrm{O}$

${\mathrm{NH}}_2-{\mathrm{CH}}_2-\mathrm{COOH} + \mathrm{HCl} \stackrel{}{\to }{\mathrm{NH}}_3\mathrm{Cl}-{\mathrm{CH}}_2-\mathrm{COOH}$

${\mathrm{CH}}_3{\mathrm{COOCH}}_3 +\mathrm{NaOH} \stackrel{}{\to }{\mathrm{CH}}_3\mathrm{COONa} + {\mathrm{H}}_2\mathrm{O}$

${\mathrm{CH}}_3{\mathrm{COOCH}}_3 +{\mathrm{H}}_2\mathrm{O} \stackrel{HCl}{\to }{\mathrm{CH}}_3\mathrm{COOH} +{\mathrm{CH}}_3\mathrm{OH}$

${\mathrm{CH}}_3\mathrm{COOH} +\mathrm{NaOH} \stackrel{}{\to }{\mathrm{CH}}_3\mathrm{COONa} + {\mathrm{H}}_2\mathrm{O}$