\(n_{Cl_2}=\dfrac{11.2}{22.4}=0.5\left(mol\right)\)
\(2KMnO_4+16HCl_{\left(đ\right)}\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(0.2...................1.6...........................................0.5\)
\(m_{KMnO_4}=0.2\cdot158=31.6\left(g\right)\)
\(V_{dd_{HCl}}=\dfrac{1.6}{1}=1.6\left(l\right)=1600\left(ml\right)\)
\(n_{Cl_2}=\dfrac{11,2}{22,4}=0,5(mol)\\ PTHH:2KMnO_4+16HCl\to 2KCl+2MnCl_2+5Cl_2+8H_2O\\ \Rightarrow n_{KMnO_4}=\dfrac{2}{5}n_{Cl_2}=0,2(mol);n_{HCl}=\dfrac{16}{5}n_{Cl_2}=1,6(mol)\\ \Rightarrow m_{KMnO_4}=0,2.158=31,6(g);V_{dd_{HCl}}=\dfrac{1,6}{1}=1,6(l)=1600(ml)\)