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Redox reaction equation

  • Thread starter pompey
  • Start date
  • #1
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Homework Statement


Balance the following redox equation (in an acidic solution):

Cu + NO3- -> NO2 + Cu2


The Attempt at a Solution



I got 4H+ + 2NO3- + Cu -> Cu+2+ + 2NO2 + 2H2O

But my book told me the same thing, but without the H2[/sub]O:

4H+ + 2NO3- + Cu -> Cu+2+ + 2NO2
 

Answers and Replies

  • #2
symbolipoint
Homework Helper
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Your answer is better because YOURS is balanced. The book's answer, by dropping the water from the right-side is not balanced. Check the number of oxygens on the two sides!
 

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