Đáp án:
\(\begin{array}{l}
\% {m_{C{H_3}CHO}} = 66\% \\
\% {m_{C{H_3}COOH}} = 34\%
\end{array}\)
\({V_{NaOH}} = 0,28l\)
Giải thích các bước giải:
Axit axetic không tác dụng với AgNO3 trong dung dịch amoniac
\(\begin{array}{l}
4AgN{O_3} + 3C{H_3}CHO + 5N{H_3} \to 4Ag + 3N{H_4}N{O_3} + 3C{H_3}{\rm{COO}}N{H_4}\\
{n_{Ag}} = 0,2mol\\
\to {n_{C{H_3}CHO}} = \dfrac{3}{4}{n_{Ag}} = 0,15mol\\
\to {m_{C{H_3}CHO}} = 6,6g\\
\to {m_{C{H_3}COOH}} = 10 - 6,6 = 3,4g\\
\to \% {m_{C{H_3}CHO}} = \dfrac{{6,6}}{{10}} \times 100\% = 66\% \\
\to \% {m_{C{H_3}COOH}} = \dfrac{{3,4}}{{10}} \times 100\% = 34\% \\
C{H_3}{\rm{COO}}H + NaOH \to C{H_3}{\rm{COO}}Na + {H_2}O\\
{n_{NaOH}} = {n_{C{H_3}COOH}} = 0,0567mol\\
\to {V_{NaOH}} = \dfrac{{0,0567}}{{0,2}} = 0,28l
\end{array}\)