Cho 3 gam H2NCH2COOH tác dụn...

A

- Hướng dẫn giải

\(\begin{array}{l}
{n_{{H_2}NC{H_2}COOH}} = \frac{3}{{75}} = 0,04\\
{H_2}NC{H_2}COOH + NaOH \to {H_2}NC{H_2}COONa + {H_2}O\\
0,04......................................0,04\\
 \to {m_{{H_2}NC{H_2}COONa}} = 0,04.97 = 3,88gam
\end{array}\)