1(1)2Na+2H2O=2NaOH+H2
Na为1.15/23mol=0.05mol,
∴氢气为0.025mol
∴为0.025*22.4L=560mL
(2)NaOH为0.05mol
∴物质的量浓度为0.05mol/100mL=0.5mol/L
2、2Al+2NaOH+2H2O=2NaAlO2+3H2
Al为0.2mol
∴氢气为0.3mol
∴为0.3*22.4L=6.72L
1(1)2Na+2H2O=2NaOH+H2
Na为1.15/23mol=0.05mol,
∴氢气为0.025mol
∴为0.025*22.4L=560mL
(2)NaOH为0.05mol
∴物质的量浓度为0.05mol/100mL=0.5mol/L
2、2Al+2NaOH+2H2O=2NaAlO2+3H2
Al为0.2mol
∴氢气为0.3mol
∴为0.3*22.4L=6.72L