\(n_{KMnO_4}=\dfrac{14,2}{158}=\dfrac{71}{790}\left(mol\right)\)
\(2KMnO_4+16HCl_đ\rightarrow2MnCl_2+5Cl_2+2KCl+8H_2O\)
\(\dfrac{71}{790}.................................\dfrac{71}{316}................\left(mol\right)\)
\(\Rightarrow V_{Cl_2}=22,4.\dfrac{71}{316}\approx5 \left(lít\right)\)
2Kmn04 +16hcl=2mncl2+5cl2+8h2o
Nkmno4=0.08
Ncl2=o.2
V cl2=o. 2.22.4=4.48