July 2022 1 40 Report
42. Укажите уравнение реакции разложения
1) FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
2) Fe + S = Fe
3) Fe + CuSO4 = Fe + FeSO4
4) 2Fe(OH)3 = Fe2O3 + 3H20​
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