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Potassium Permanganate

The stoichiom...

Question

The stoichiometric coefficient of manganese dioxide in the balanced chemical reaction when potassium permanganate is added to a hot solution of manganese sulphate is _____.

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Solution

Manganese dioxide is formed when potassium permanganate is added to a hot solution of manganese sulphate.

$2 K M n O_{4} + 3 M n {S O}_{4} + 2 H_{2} O \to 5 M n O_{2} + K_{2} {S O}_{4} + 2 H_{2} {S O}_{4}$ .

The coefficient of manganese dioxide is 5.

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Q. The reaction of the permanganate ion with the oxalate ion in acidic solution forms manganese(II) ion and carbon dioxide. What is the stoichiometric coefficient in front of manganese(II) in the balanced redox equation?

M n O_{4}^{-} + C_{2} O_{4}^{2 -} \to M n^{2 +} + C O_{2}

Q. The reaction of the permanganate ion with the oxalate ion in acidic solution forms manganese(II) ion and carbon dioxide. What is the stoichiometric coefficient in front of manganese(II) in the balanced redox equation?

M n O_{4}^{-} + C_{2} O_{4}^{2 -} \to M n^{2 +} + C O_{2}

Q. A green solution of potassium manganate (VI) turns purple and a brown solid is precipitated, when

C O_{2}

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Q. Show with balanced equations what happens when the following are mixed:

potassium permanganate interacts with manganese dioxide in the presence of potassium hydroxide.

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