H2+Br2=2HBr
H2{0} - 2e- = 2H{+}. |1
Br2{0} + 2e- = 2Br{-} |2
2Na+H2=2NaH
Na{0} - e- = Na{+} |2
H2 + 2e- = 2H{-}. |1
ZnO+H2=Zn+H2O
Zn{2+} + 2e- = Zn{0}. |1
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H2+Br2=2HBr
H2{0} - 2e- = 2H{+}. |1
Br2{0} + 2e- = 2Br{-} |2
2Na+H2=2NaH
Na{0} - e- = Na{+} |2
H2 + 2e- = 2H{-}. |1
ZnO+H2=Zn+H2O
Zn{2+} + 2e- = Zn{0}. |1
H2{0} - 2e- = 2H{+}. |1