1)Kbr+H2SO4-SO2+Br2+H2O+KHSO4

2)FeSO4+K2CI2O7+H2-Fe2(SO4)3+KCL+H2O

3)Na2SO3+KiO3+H2So4-I2+N2SO4+K2SO4+H2O

Во вложениях пример решаемый на уроке,но ничего не понял,буквально за 20 мин оъяснили.

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