Cho các sơ đồ phản ứng:

\(Glyxin\xrightarrow{{ + NaOH}}X\xrightarrow{{ + HCl\,{\text{d}}u}}Y\) (1)

\(Glyxin\xrightarrow{{ + HCl}}Z\xrightarrow{{ + NaOH\,{\text{d}}u}}T\) (2)

Y và T lần lượt là

*Sơ đồ (1): \({H_2}NC{H_2}COOH\xrightarrow{{ + NaOH}}{H_2}NC{H_2}COONa\left( X \right)\xrightarrow{{ + HCl\,{\text{d}}u}}Cl{H_3}NC{H_2}COOH\left( Y \right)\)

PTHH:

H₂NCH₂COOH + NaOH → H₂NCH₂COONa + H₂O
H₂NCH₂COONa + HCl → ClH₃NCH₂COOH + NaCl
*Sơ đồ (2): \({H_2}NC{H_2}COOH\xrightarrow{{ + HCl}}Cl{H_3}NC{H_2}COOH\left( Z \right)\xrightarrow{{ + NaOH\,{\text{d}}u}}{H_2}NC{H_2}COONa\left( T \right)\)

PTHH:

H₂NCH₂COOH + HCl → ClH₃NCH₂COOH 
ClH₃NCH₂COOH + NaOH → H₂NCH₂COONa + H₂O + NaCl