November 2021 1 7 Report
Какие из приведенных реакций являются окислительно-восстанови-тельными? К2Сr2О7 + H2SO4 конц СrO3 + K2SO4 + Н2О,
КВr + КBrO3 + H2SO4 Вr2 + Н2О + K2SO4 ,
Na2SO3 + KMnO4 + H2O MnO2 + Na2SO4 + КОH
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