What is the balanced ionic redox reaction of nitrite ions with manganate(VII) ions in an acidic solution?

My suggestion is:

$\ce{5NO2- + 2MnO4- + 6H+ -> 5NO3- + 2Mn^{+2} + 3H2O}$

Is that right?

  • $\begingroup$ Thanks for adding in your efforts at solving the problem. What were your steps to arrive at that answer? If those answering can see your reasoning, they can steer you in the right direction if you are incorrect. $\endgroup$
    – jonsca
    Commented Nov 17, 2014 at 1:12
  • $\begingroup$ related: chemistry.stackexchange.com/a/15720/4945 $\endgroup$ Commented Nov 17, 2014 at 2:26

1 Answer 1


Your suggestion is certainly part of the picture, but as is usually the case with nitric acids, a number of side reactions can and often do take place depending on concentration and temperature. In acid solutions, for example, nitrite spontaneously decompose giving nitric oxide together with dinitrogen tetroxide. My feeling is that under optimum conditions your suggested reaction would predominate


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