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Stabileste coeficientii urmatoarelor reactii redox:
K2Cr2O7+Fe2Cl2+HCl --> CrCl3+KCl+FeCl3+H2O
KMnO4+HCl+H2S --> KCl+MnCl2+S+H2O


Răspuns :

6FeCl2+K2Cr2O7+14HCl=2CrCl3+2KCl+6FeCl3+7H2O
2KMnO4+6HCl+5H2S=2KCl+2MnCl2+5S+8H2O