\(n_{CO_2}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\)
PT: \(CaCO_3+2CH_3COOH\rightarrow\left(CH_3COO\right)_2Ca++CO_2+H_2O\)
Theo PT: \(n_{CH_3COOH}=2n_{CO_2}=0,1\left(mol\right)\)
\(\Rightarrow\left\{{}\begin{matrix}\%m_{CH_3COOH}=\dfrac{0,1.60}{10,6}.100\%\approx56,6\%\\\%m_{C_2H_5OH}\approx43,4\%\end{matrix}\right.\)