Question

When a manganous salt is fused with a mixture of kno3 and solid naoh, the oxidation number if mn changes from +2 to?

Answer 1

when a manganous salt is fused with a mixture of KNO₃ and solid NaOH, the oxidation number if Mn changes from +2 to 6

EXPLANATION:

when a manganous salt is fused with a mixture of KNO₃ and solid NaOH, the reaction can be given as follows:

Mn⁺² + NO₃⁻  ----> MnO₄⁻²  + H₂O

Clearly we can see that the charge of MnO₄ is -2

charge of O₄ = (-2) x 4 = -8

hence charge of Mn + -8 = -2

=>charge of Mn = +6

Hence when a manganous salt is fused with a mixture of KNO₃ and solid NaOH, the oxidation number if Mn changes from +2 to 6