August 2022 1 5 Report

расставить коэфициенты 

PbS+H2O2---> PbSO4+H20

H202+KMnO4 + H2SO4 ---> O2 + MnSO4 +K2SO4 + H20

KMnO4 +HCl --> KCl + MnCl2 + Cl2 + H20

KMnO4 + HCl ---> MnCl2 + Cl2 + H20 

 

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