Question

Balance the equation for this reaction in an acidic solution MnO-4 to NO-3+Mn+2

Answer 1

Answer;

MnO4- + H2O + NO2- = MnO2(s) + NO3- + OH-

Explanation;

• In the oxidation number change method the underlying principle is that the gain in the oxidation number (number of electrons) in one reactant must be equal to the loss in the oxidation number of the other reactant.

• The ionic equation will be

MnO4- + H2O + NO2- ⇄ MnO2(s) + NO3- + OH-

Answer 2

Answer

MnO₄ + 2H⁺ +3NO₂⁻ →3NO₃⁻ + Mn²⁺ +H₂O

Explanation

This is a redox reaction (oxidation-reduction reaction) which involves the transfer of electrons between two species. i.e

Mn + 6e⁻→Mn²⁺ (reduction)

3N³⁺- 6e⁻→3Mn⁵⁺(oxidation)