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Balancing of molecular equation in alkaline medium. MnO2 + O2 + KOH → K2MnO4 + H2O

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Balancing of molecular equation in alkaline medium.

MnO2 + O2 + KOH → K2MnO4 + H2O

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(ii) Balance the changes in O, N, by multiplying the oxidant and reductant by suitable numbers.

4MnO2 + 2O2 + KOH → K2MnO4 + H2O 

(iii) Balance the equation atomically (except O and H). 

4MnO2 + 2O2 + KOH → K2MnO4 + H2O 

(iv) Balance oxygen and hydrogen atoms by multiplying H2O by 4. 

4MnO2 + 2O2 + 8KOH → 4K2MnO4 + 4H2O

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