\(C_6H_{12}O_6\xrightarrow[lên-men-rươu]{30-35^oC}2C_2H_5OH\left(0,5\right)+2CO_2\left(0,5\right)\)\((1)\)
\(CO_2\left(0,5\right)+Ca\left(OH\right)_2--->CaCO_3\downarrow\left(0,5\right)+H_2O\)\((2)\)
\(a)\)
\(n_{CaCO_3}=\dfrac{50}{100}=0,5\left(mol\right)\)
Theo (2) \(n_{CO_2}=0,5\left(mol\right)\)
Theo (1) \(n_{C_2H_5OH}=0,5\left(mol\right)\)
\(\Rightarrow m_{C_2H_5OH}=23\left(g\right)\)
\(b)\)
Theo PTHH (1) \(n_{C_6H_{12}O_6}\left(pứ\right)=0,25\left(mol\right)\)
\(\Rightarrow m_{C_6H_{12}O_6}\left(pứ\right)=45\left(g\right)\)
Hiệu suất quá trình lên men rượu:
\(H=\dfrac{45}{56,25}.100\%=80\%\)