\(1.Fe+2HCl\rightarrow FeCl_2+H_2\)
\(2.n_{H_2}=\frac{2,24}{22.4}=0,1mol\)
\(TheoPTHH:n_{H_2}=n_{Fe}=0,1mol\)
\(\rightarrow m_{Fe}=0,1\times56=5,6(g)\)
\(3.TheoPTHH:n_{HCl}=2.n_{H_2}=2.0,1=0,2mol\)
\(C_M=\frac{n}{V}\rightarrow C_{M_{HCl}}=\frac{0,2}{0,15}\approx1,3M\)
1) PTHH: \(Fe+2HCl\rightarrow FeCl_2+H_2\)
2) Ta có: \(n_{H_2}=\frac{2,24}{22,4}=0,1\left(mol\right)=n_{Fe}\)
\(\Rightarrow m_{Fe}=0,1\cdot56=5,6\left(g\right)\)
3) Theo PTHH: \(n_{HCl}=2n_{H_2}=0,2mol\)
\(\Rightarrow C_{M_{HCl}}=\frac{0,2}{0,15}\approx0,13\left(M\right)\)