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MHT CET2019Evening ShiftChemistryd and f Block ElementsActual

When a mixture of manganese dioxide, potassium hydroxide and potassium chlorate is fused, the product obtained is

Options

  1. AK 2 S O 4
  2. BK 2 M n O 3
  3. CK 2 M n O 4
  4. DK M n O 4

Correct answer

C. K 2 M n O 4

Step-by-step solution

When a mixture of manganese dioxide, potassium hydroxide and potassium chlorate is fused then potassium chlorate first decomposes to give potassium chloride and oxygen gas. The formed O 2 gas then reacts with M n O 2 and KOH to give K 2 M n O 4 . The equations for the above reaction can be written as: 2 K C l O 3 s → M n O 2 Δ 2 K C l s + 3 O 2 g 2 M n O 2 + 4 K O H + O 2 → 2 K 2 M n O 4 + 2 H 2 O

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