Fe+2Hcl->FeCl2+H2
0,1------------0,05
mHCl=3,65g
=>nHCl=0,1 mol
=>VH2=0,05.22,4=1,12l
PTTH: \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
Ta có: \(m_{HCl}=10\cdot36,5\%=3,65\left(g\right)\) \(\Rightarrow n_{HCl}=\frac{3,65}{36,5}=0,1\left(mol\right)\)
\(\Rightarrow n_{H_2}=0,15mol\) \(\Rightarrow m_{H_2}=a=0,15\cdot2=0,3\left(g\right)\)