ta có: nFe= \(\dfrac{5,6}{56}\)= 0,1( mol)
PTPU
Fe+ 2HCl\(\rightarrow\) FeCl2+ H2\(\uparrow\)
0,1....0,2...................0,1... mol
\(\Rightarrow\) VH2= 0,1. 22,4= 2,24( lít)
CM HCl= \(\dfrac{0,2}{0,1}\)= 2 M
mdd HCl= 100. 1,2= 120( g)
Fe + 2HCl → FeCl2 + H2
\(n_{Fe}=\dfrac{5,6}{56}=0,1\left(mol\right)\)
a) Theo PT: \(n_{H_2}=n_{Fe}=0,1\left(mol\right)\)
\(\Rightarrow V_{H_2}=0,1\times22,4=2,24\left(l\right)\)
b) Theo PT: \(n_{HCl}=2n_{Fe}=2\times0,1=0,2\left(mol\right)\)
\(\Rightarrow C_{M_{HCl}}=\dfrac{0,2}{0,1}=2\left(M\right)\)
c) \(m_{ddHCl}=100\times1,2=120\left(g\right)\)