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Which is the balanced version of the half-reaction below that occurs in acidic solution?NO3- NO2A.NO3- + H2O + 2e- NO2 + 2H+ + 2e-B.2NO3- 3NO2C.NO3- + 2H+ + e- NO2 + H2OD.2NO3- 2NO2 + O2

Question

Which is the balanced version of the half-reaction below that occurs in acidic solution?NO3- NO2A.NO3- + H2O + 2e- NO2 + 2H+ + 2e-B.2NO3- 3NO2C.NO3- + 2H+ + e- NO2 + H2OD.2NO3- 2NO2 + O2

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Solution

The balanced version of the half-reaction NO3- to NO2 in acidic solution is C. NO3- + 2H+ + e- NO2 + H2O.

Here's the step-by-step process:

  1. Write down the unbalanced equation: NO3- → NO2

  2. Balance the atoms other than H and O: In this case, Nitrogen (N) is already balanced.

  3. Balance the O atoms by adding H2O: NO3- → NO2 + H2O

  4. Balance the H atoms by adding H+: NO3- + 2H+ → NO2 + H2O

  5. Balance the charge by adding electrons (e-): NO3- + 2H+ + e- → NO2 + H2O

So, the correct answer is C. NO3- + 2H+ + e- NO2 + H2O.

This problem has been solved

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