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Topic: balancing chemical equations  (Read 7504 times)

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lpellicano

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balancing chemical equations
« on: January 28, 2006, 04:12:58 PM »
I for the life of me cannot figure out how to balance these equations.  Can anyone help me?!?!  Is it possible that an equation can't be balanced?

C4H8(OH)2 + H2O2 --> C4H6O2 + H2O


Na2O2 + H2O -->  NaOH + O2


HNO3  -->  NO2 + H2O +O2
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lpellicano

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Re:balancing chemical equations
« Reply #1 on: January 28, 2006, 04:29:13 PM »
I did try to work these out.  I had a set of 100 problems to balance and these were the only ones I couldn't get.  Every time I end up with a fraction on one side I cannot figure out how to balance the fraction on the other side.  
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Offline Borek

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Re:balancing chemical equations
« Reply #2 on: January 28, 2006, 05:53:15 PM »
All three are relatively simple and can be balanced. Show what you did and where you get stuck.

There are reactions that can't be balanced, but that's not the case.
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Dt_rox

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Re:balancing chemical equations
« Reply #3 on: January 28, 2006, 09:44:58 PM »
2Na2O2 + 2H2O -->  4NaOH + O2


4HNO3  -->  4NO2 + 2H2O + O2

The first one looked like it would be too hard so I didnt bother, sorry.
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Byrne

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Re:balancing chemical equations
« Reply #4 on: January 28, 2006, 09:53:09 PM »
Quote from: Dt_rox on January 28, 2006, 09:44:58 PM
2Na2O2 + 2H2O -->  4NaOH + O2


4HNO3  -->  4NO2 + 2H2O + O2

The first one looked like it would be too hard so I didnt bother, sorry.

I don't think the first one is possible to balance, quite frankly.  Are you sure you posted it correctly?
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Dt_rox

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Re:balancing chemical equations
« Reply #5 on: January 28, 2006, 09:57:30 PM »
Are you talking about this one Byrne? C4H8(OH)2 + H2O2 --> C4H6O2 + H2O

Or did I make a mistake balancing?
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Byrne

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Re:balancing chemical equations
« Reply #6 on: January 28, 2006, 10:06:09 PM »
Quote from: Dt_rox on January 28, 2006, 09:57:30 PM
Are you talking about this one Byrne? C4H8(OH)2 + H2O2 --> C4H6O2 + H2O

Or did I make a mistake balancing?

My bad.  I meant the very first one the original poster provided.  Yours look great to me.
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Offline Borek

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Re:balancing chemical equations
« Reply #7 on: January 29, 2006, 05:08:00 AM »
Quote from: Dt_rox on January 28, 2006, 09:44:58 PM
2Na2O2 + 2H2O -->  4NaOH + O2
4HNO3  -->  4NO2 + 2H2O + O2

Don't do homework for others.
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nikestied

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Re:balancing chemical equations
« Reply #8 on: February 25, 2006, 06:16:37 AM »
C4H8(OH)2 + 2H2O2 --> C4H6O2 + 4H2O

a= 2 (1)   C - 4a=4c
b= 4 (2)      (a=c)
c= 2 (1)   H - 10a + 2b = 6c + 2d
d= 8 (4)
                      O - 2a + 2b = 2c + d
Check:
   4 Carbon on each side
   14 Hydrogen on each side
   8 Oxygen on each side

      It checks!!  ;D
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