Can someone explain me how to balance this reaction?

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Di Mezza Alfredo
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Can someone explain me how to balance this reaction?

Post by Di Mezza Alfredo »

(Ru++) +(NH4+) + (Br2) = (Br-) +Ru(NO2)2
bejoy
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can we know the source for this reaction

Post by bejoy »

can we know the source for this reaction
Bejoy
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GrahamKemp
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Re: Can someone explain me how to balance this reaction?

Post by GrahamKemp »

Di Mezza Alfredo wrote:(Ru++) +(NH4+) + (Br2) = (Br-) +Ru(NO2)2
Todo, balance:
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    Ru{2+} + NH4{+} + Br2 = Br{-} + Ru(NO2)2
Remove the spectator ion

Code: Select all

Ru{2+}
and divide into Red/Ox half cells. Balance O with water
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     2 NH4{+} + 4 H2O = 2 NO2{-} 
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     Br2 = 2 Br{-}
Balance H with protons
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     2 NH4{+} + 4 H2O = 2 NO2{-} + 16 H{+} 
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     Br2 = 2 Br{-}
Migrate to basic
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     2 NH4{+} + 16 OH{-}  = 2 NO2{-} + 12 H2O 
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     Br2 = 2 Br{-}
Balance charge with electrons
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     2 NH4{+} + 16 OH{-}  = 2 NO2{-} + 12 H2O + 12 e{-}
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     6 Br2 + 12 e{-} = 12 Br{-}
Recombine:
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     Ru{2+} + 2 NH4{+} + 16 OH{-} + 6 Br2 = Ru(NO2)2 + 12 Br{-} + 12 H2O
spadanco
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Re: Can someone explain me how to balance this reaction?

Post by spadanco »

GrahamKemp wrote:
Di Mezza Alfredo wrote:(Ru++) +(NH4+) + (Br2) = (Br-) +Ru(NO2)2
Todo, balance:
  • Code: Select all

    Ru{2+} + NH4{+} + Br2 = Br{-} + Ru(NO2)2
Remove the spectator ion

Code: Select all

Ru{2+}
and divide into Red/Ox half cells. Balance O with water
  • Code: Select all

     2 NH4{+} + 4 H2O = 2 NO2{-} 
  • Code: Select all

     Br2 = 2 Br{-}
Balance H with protons
  • Code: Select all

     2 NH4{+} + 4 H2O = 2 NO2{-} + 16 H{+} 
  • Code: Select all

     Br2 = 2 Br{-}
Migrate to basic
  • Code: Select all

     2 NH4{+} + 16 OH{-}  = 2 NO2{-} + 12 H2O 
  • Code: Select all

     Br2 = 2 Br{-}
Balance charge with electrons
  • Code: Select all

     2 NH4{+} + 16 OH{-}  = 2 NO2{-} + 12 H2O + 12 e{-}
  • Code: Select all

     6 Br2 + 12 e{-} = 12 Br{-}
Recombine:
  • Code: Select all

     Ru{2+} + 2 NH4{+} + 16 OH{-} + 6 Br2 = Ru(NO2)2 + 12 Br{-} + 12 H2O
The information available was very useful
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