Alkaline oxidative fusion of MnO2 gives ''A'' which on electrolytic oxidation in alkaline solution produces B. A and B respectively are

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Q.
Alkaline oxidative fusion of ${MnO}_{2}$ gives ''A'' which on electrolytic oxidation in alkaline solution produces B. A and B respectively are [2024]

1 ${Mn}_{2} O_{7}$ and ${MnO}_{4}^{-}$

2 ${MnO}_{4}^{2 -}$ and ${MnO}_{4}^{-}$

3 ${Mn}_{2} O_{3}$ and ${MnO}_{4}^{2 -}$

4 ${MnO}_{4}^{2 -}$ and ${Mn}_{2} O_{7}$

Ans.
(2)

Alkaline oxidative fusion of ${MnO}_{2}$ gives manganate $({MnO}_{4}^{2 -})$ , which upon electrolytic oxidation gives permanganate.

   $2 {MnO}_{2} + 4 KOH + O_{2} \to 2 K_{2} {MnO}_{4} + 2 H_{2} O$

   ${MnO}_{4}^{2 -} \overset{Electrolytic oxidation}{\to} {MnO}_{4}^{-}$

Manganate Permanganate

  This is commercial method of preparation of Permanganate

Solution

Q.
Alkaline oxidative fusion of ${MnO}_{2}$ gives ''A'' which on electrolytic oxidation in alkaline solution produces B. A and B respectively are [2024]

1 ${Mn}_{2} O_{7}$ and ${MnO}_{4}^{-}$

2 ${MnO}_{4}^{2 -}$ and ${MnO}_{4}^{-}$

3 ${Mn}_{2} O_{3}$ and ${MnO}_{4}^{2 -}$

4 ${MnO}_{4}^{2 -}$ and ${Mn}_{2} O_{7}$

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Solution

Q. Alkaline oxidative fusion of MnO2 gives ''A'' which on electrolytic oxidation in alkaline solution produces B. A and B respectively are [2024]

1 Mn2O7 and MnO4-

2 MnO42- and MnO4-

3 Mn2O3 and MnO42-

4 MnO42- and Mn2O7

Ans. (2) Alkaline oxidative fusion of MnO2 gives manganate (MnO42-), which upon electrolytic oxidation gives permanganate. 2MnO2+4KOH+O2→2K2MnO4+2H2O MnO42-→Electrolytic oxidationMnO4- Manganate Permanganate This is commercial method of preparation of Permanganate

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Q.
Alkaline oxidative fusion of ${MnO}_{2}$ gives ''A'' which on electrolytic oxidation in alkaline solution produces B. A and B respectively are [2024]

1 ${Mn}_{2} O_{7}$ and ${MnO}_{4}^{-}$

2 ${MnO}_{4}^{2 -}$ and ${MnO}_{4}^{-}$

3 ${Mn}_{2} O_{3}$ and ${MnO}_{4}^{2 -}$

4 ${MnO}_{4}^{2 -}$ and ${Mn}_{2} O_{7}$