Balance the equation using the smallest whole numbers for the coefficients, assu

Question

Balance the equation using the smallest whole numbers for the coefficients, assuming the redox reaction occurs in basic solution. Add water where appropriate. CN-(aq) + MnO4-(aq) --> CNO-(aq) + MnO2(s) For my answer I got MnO4-(aq) + 2CN-(aq) --> MnO2(s) + 2CNO-(aq) Please help me understand what I have done wrong.

Explanation / Answer

CN-(aq) + MnO4-(aq) --> CNO-(aq) + MnO2(s) 3(H2O(l) + CN-(aq) --> CNO-(aq) + 2H+(aq) + 2e-) 2(3e- + 4H+(aq) + MnO4-(aq) --> MnO2(s) + 2H2O(l)) 4H2O(l) + 2MnO42-(aq) +3CN-(aq)--> 3CNO- + 2MnO2(s) + 8OH-(aq)

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