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Flavio Mitchell ∙
Na2SO4 + BaCl2 ---> 2NaCl + BaSO4 :)
Idontremember is right, Na+ was correct for me on Apex
-1.68
It does not change.
Silver (Ag)
2Mg(s) + O2(g) ==> 2MgOMg ===> Mg^2+ + 2e- [x2 to balance electrons] = oxidation half reaction
O2 + 4e- ===> 2O^2-
So, the final oxidation half reaction will be:
2Mg(s) ===> 2Mg^2+ + 4e-