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Manipal MET2020Chemistryd and f Block Elements

When MnO ₂ is heated with PbO ₂ and conc. HNO ₃ , pink colour is obtained due to formation of

Options

  1. AKMnO ₄
  2. BHMnO ₄
  3. CPb ( MnO ₄ )₂
  4. DPbMnO ₄

Correct answer

B. HMnO ₄

Step-by-step solution

( aligned & 2 MnO ₂+4 HNO ₃ 2 Mn ( NO ₃ )₂+2 H ₂ O + O ₂ & 2 Mn ( NO ₃ )₂+5 PbO ₂+6 HNO ₃ Permanganic acid(violet pink) 2 HMnO ₄ +5 ~Pb ( NO ₃ )₂+2 H ₂ O aligned )

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