氢气的量为钠和铝反应产生的体积之和.
2Na+2H2O=2NaOH+H2↑ 2Al+2NaOH+2H2O=2NaAlO2+3H2↑
2mol 22.4L 2mol 3*22.4L
0.1mol v(H2) n(Al) 4.48-v(H2)
解得,v(H2)=1.12L n(Al) =0.1mol
选B
氢气的量为钠和铝反应产生的体积之和.
2Na+2H2O=2NaOH+H2↑ 2Al+2NaOH+2H2O=2NaAlO2+3H2↑
2mol 22.4L 2mol 3*22.4L
0.1mol v(H2) n(Al) 4.48-v(H2)
解得,v(H2)=1.12L n(Al) =0.1mol
选B