July 2022 1 17 Report
Из приведённых уравнений химический реакций выберите то, которое характеризует общее свойство всех кислотных оксидов.
1) SO3+H2O=H2SO4
2) SO3+Na2O=Na2SO4
3) H2SO4=SO3+H2O
4) SO3+2NaOH=Na2SO4+H2O
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