August 2021 0 16 Report
Помогите пожалуйста найти ошибку в балансе Cr2(SO4)3+NaOh+Br2=na2cro4+nabr+na2so4+h2o Cr^3+  +8OH^-   -4e    => CrO4^-  + 4H2O |1 Br2^0    +2e     => 2Br^-                                 |   2
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