\(PTHH:2Fe+xCl_2\rightarrow2FeCl_x\)
\(n_{Fe}=\frac{m_{Fe}}{M_{Fe}}=\frac{22,4}{56}=0,4\left(mol\right)\)
Theo \(ĐLBTKL\) , ta có:
\(m_{Fe}+m_{Cl_2}=m_{FeCl_x}\)
\(22,4+31,3=m_{FeCl_x}\)
\(m_{FeCl_x}=53,7\left(g\right)\)
\(M_{FeCl_x}=\frac{m_{FeCl_x}}{n_{Fe}}=\frac{53,7}{0,4}=134,25\left(g/mol\right)\)
\(\Leftrightarrow M_{FeCl_x}=56+35,5x\)
\(\Leftrightarrow134,25-56=35,5x\)
\(\Leftrightarrow78,25=35,5x\)
\(\Leftrightarrow x=2\)
\(\Rightarrow CTHH:FeCl_2\)