help me please :)

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to4uu
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Newbie
Posts: 1
Joined: Tue Apr 07, 2015 7:38 am

help me please :)

Post by to4uu »

please help me to balance this chemical reaction...
2AgNO3 + NH4OH + CH3CHO = 2Ag + NH4NO3 + CH3COONH4 + H2O

i started ...
Ag+1 +1 e- = Ag0 / 1


C+1 -2e- = C+3 / 2
:(
GrahamKemp
Distinguished Member
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Posts: 396
Joined: Mon Mar 19, 2012 10:12 pm

Re: help me please :)

Post by GrahamKemp »

Code: Select all

AgNO3 + NH4OH + CH3CHO = Ag + NH4NO3 + CH3COONH4 + H2O
Notice that

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NH4{+}, NO3{-}
are spectators, and the

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-C=OCH3
functional group remains intact. We can remove the spectators and alias the functional group, then balance the remainder.

Do away with the distractions!

Strip bare:

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Ag{+} + XH = Ag + XO{-}
Halve Eqn:

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Ag{+} = Ag  || XH = XO{-}
Balance O:

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Ag{+} = Ag  || XH + H2O = XO{-}
Balance H:

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Ag{+} = Ag  || XH + H2O = XO{-} + 2 H{+}
Alkaline it:

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Ag{+} = Ag  || XH + 2 OH{-} = XO{-} + H2O
Balance e:

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Ag{+} + e{-} = Ag  || XH + 2 OH{-} = XO{-} + H2O + e{-}
Remerge :

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 Ag{+} + XH + 2 OH{-} = Ag + XO{-} + H2O 
Return the spectators and abolish the alias.

Code: Select all

 AgNO3 + CH3COH + 2 NH4OH = Ag + CH3COONH4 + NH4NO3 + H2O 
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