a. Ta có: \(V_{rượu}=\dfrac{96.100}{100}=96\left(ml\right)\)
\(\Rightarrow m_{rượu}=0,8.96=76,8\left(g\right)\)
b. Ta có: \(n_{rượu}=\dfrac{76,8}{46}=\dfrac{192}{115}\left(mol\right)\)
\(2C_2H_5OH+2Na->2C_2H_5ONa+H_2\)
\(\dfrac{192}{115}\left(mol\right)\) \(\dfrac{96}{115}\left(mol\right)\)
\(\Rightarrow V_{H_2}=\dfrac{96}{115}.22,4\approx18,7\left(l\right)\)