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KCET2018Chemistryp Block Elements (Group 15, 16, 17 & 18)

When ( PbO ₂ ) reacts with concentrated ( HNO ₃ ), the gas evolved is

Options

  1. A( NO ₂ )
  2. B( O₂ )
  3. C( N₂ )
  4. D( N₂ O )

Correct answer

B. ( O₂ )

Step-by-step solution

( 2 PbO ₂+4 HNO ₃ 2 ~Pb ( NO ₃ )₂+2 H ₂ O + O ₂ )

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