Câu 2:
\(2Na+2H_2O\rightarrow2NaOH+H_2\)
\(2Na+2C_2H_5OH\rightarrow2C_2H_5ONa+H_2\uparrow\)
Câu 1:
\(V_{C_2H_5OH}=\dfrac{40\cdot96}{100}=38,4\left(ml\right)\)
\(m_{C_2H_5OH}=38,4\cdot0,8=30,72\left(gam\right)\)
\(n_{C_2H_5OH}=\dfrac{30,72}{12\cdot2+6+16}=\dfrac{384}{575}\left(mol\right)\)
=>\(n_{H_2}=\dfrac{192}{575}\left(mol\right)\)
\(V_{H_2}=\dfrac{192}{575}\cdot22,4\simeq7,48\left(lít\right)\)