nFe=22,4/56=0,4(mol)
Fe+H2SO4--->FeSO4+H2
0,4___________0,4___0,4
VH2=0,4.22,4=8,96(l)
mFeSO4=0,4.152=60,8(g)
a) \(Fe+H_2SO_4\underrightarrow{t^o}H_2+FeSO_4\)
b) \(n_{Fe}=\dfrac{m}{M}=\dfrac{22,4}{56}=0,4\left(mol\right)\)
Theo PTHH, \(n_{H_2}=n_{Fe}=0,4\left(mol\right)\)
\(m_{H_2}=n\cdot M=0,4\cdot2=0,8\left(g\right)\)