August 2022 1 1 Report
Какая из перечисленных реакций относится к окислительно-восстановительным?

CaCO3+2HCl=CaCl2+CO2+H2O
2Cu(NO3)2=2CuO+4NO2+O2
NaHSO3+NaOH=Na2SO3+H2O
SO3+Na2O=Na2SO4
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