se dau urmatoarele scheme de reactii:
Mg+O2→MgO
Na2SO4+BaCl→BaSo4+NaCl
KOH+H2SO4→K2SO4+H2O
![Se Dau Urmatoarele Scheme De ReactiiMgO2MgONa2SO4BaClBaSo4NaCl KOHH2SO4K2SO4H2O class=](https://ro-static.z-dn.net/files/d50/b385f711aafdc03500837cc80a29fd16.jpg)