July 2022 1 0 Report
25. «Генетическая связь между классами неорганических веществ»
Осуществите цепочки превращений.
1. Fe--- FeCL2 --- Fe(OH)2 --- Fe(NO3)2
2. S---SO3 --- H2SO4--- BaSO4
3. BaCL2 -> BaSO4--> X1 -> BaCl2
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