\(n_{tb\left(pu\right)}=\dfrac{150}{162n}\cdot81\%=\dfrac{0.75}{n}\left(mol\right)\)
\(n_{C_2H_5OH}=2n\cdot n_{tb}=\dfrac{0.75}{n}\cdot2n=1.5\left(mol\right)\)
\(m_{C_2H_5OH}=1.5\cdot46=69\left(g\right)\)
\(V_{C_2H_5OH}=\dfrac{69}{0.8}=86.25\left(ml\right)\)
\(V_{hhr}=\dfrac{86.25}{0.46}=187.5\left(ml\right)\)
(C6H10O5)n->2nC2H5OH
162n 2n.46 (g)
150 85,185 (g)
Vì hiệu suất 81% nên mC2H5OH=85,185.81%=69g
V(C2H5OH)=69/0,8=86,25ml
V rượu= 86,25.100/46=187,5ml