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NTA Abhyas JEE Main2020Chemistryd and f Block ElementsPractice

A coloured compound is formed when M n O 2 is fused with K O H , the compound and its colour is

Options

  1. AK 2 M n O 4 , purple green
  2. BK M n O 4 , purple
  3. CM n 2 O 3 , brown
  4. DM n 3 O 4 black

Correct answer

A. K 2 M n O 4 , purple green

Step-by-step solution

Potassium maganate is formed when mangnese dioxide is fused with KOH, which is purple green coloured compound. M n O 2 + K O H + O 2 → K 2 M n O 4 + H 2 O .

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