\(n_{Fe}=\dfrac{16,8}{56}=0,3\left(mol\right)\)
\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)
\(0,3->0,3-->0,3->0,3\)
\(mH_2SO_4=0,3.98=29,4\left(g\right)\)
\(\Rightarrow C\%_{ddH_2SO_4}=\dfrac{29,4.100}{200}=14,7\%\)
\(V_{FeSO_4}=\dfrac{n}{CM}=\dfrac{0,3}{2}=0,25\left(l\right)\)
\(VH_2=0,3.22,4=6,72\left(l\right)\)
\(n_{Fe}=\dfrac{16,8}{56}=0,3\left(mol\right)\\
pthh:Fe+H_2SO_4\rightarrow FeSO_4+H_2\)
0,3 0,3 0,3 0,3
\(C\%_{H_2SO_4}=\dfrac{0,3.98}{200}.100\%=14,7\%\\
V_{FeSO_4}=\dfrac{0,3}{2}=0,15\left(l\right)\\
V_{H_2}=0,3.22,4=6,72\left(l\right)\)