102. Solving a chemistry problem
282. Which of the following reactions are redox:
KHCO3 KOH = K2CO3 H2O Zn CuSO4 = ZnSO4 Cu
SnCl2 2FeCl3 = SnCl4 2 FeCl2 CaCO3 = CaO CO2
2KMnO4 5KNO2 3H2SO4 = 2MnSO4 5KNO3 K2SO4 3H2O
Indicate oxidizing agents and reducing agents, calculate the oxidation states of elements in these compounds.
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