Gọi a,b là số mol của phenol và propan-1-ol
\(C_6H_5OH+Na\rightarrow C_6H_5Na+\frac{1}{2}H_2\)
\(C_3H_7OH+Na\rightarrow C_3H_7Na+\frac{1}{2}H_2\)
Ta có:
\(n_{H2}=0,15\left(mol\right)\)
\(\left\{{}\begin{matrix}94a+60b=24,8\\0,5a+0,5b=0,15\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}a=0,2\\b=0,1\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}\%m_{C6H5OH}=\frac{0,2.94}{24,8}.100\%=75,81\%\\\%m_{C3H7OH}=100\%-75,81\%=24,19\%\end{matrix}\right.\)