Ta có: \(n_{Fe}=\dfrac{0,56}{56}=0,01\left(mol\right)\)
\(PTHH:H_2SO_4+Fe--->FeSO_4+H_2\)
a. Theo PT: \(n_{H_2SO_4}=n_{FeSO_4}=n_{H_2}=n_{Fe}=0,01\left(mol\right)\)
\(\Rightarrow m_{FeSO_4}=0,01.152=1,52\left(g\right)\)
\(V_{H_2}=0,01.22,4=0,224\left(lít\right)\)
b. Ta có: \(m_{H_2SO_4}=0,01.98=0,98\left(g\right)\)
Ta lại có: \(C_{\%_{H_2SO_4}}=\dfrac{0,98}{m_{dd_{H_2SO_4}}}.100\%=19,6\%\)
\(\Rightarrow m_{dd_{H_2SO_4}}=5\left(g\right)\)