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99 Percentile Qs Bank for JEE MainChemistryp Block Elements (Group 13 & 14)

What are x and y in the following reaction? x   Pb 3 O 4 → yPbO + O 2

Options

  1. Ax = 3 , y = 6
  2. Bx = 2 , y = 4
  3. Cx = 2 ,   y = 5
  4. Dx = 2 ,   y = 6

Correct answer

D. x = 2 ,   y = 6

Step-by-step solution

Lead(II,IV) oxide, also called red lead or minium or Lead tetroxide , is the inorganic compound with the formula Pb 3 O 4 . A bright red or orange solid, it is used as pigment, in the manufacture of batteries, and rustproof primer paints. It is an example of a mixed valence compound Pb 3 O 4 consists of PbO and PbO 2 Oxidation state of Pb in PbO is +2 and in PbO 2 is +4 When heated to 500 °C, it decomposes to lead(II) oxide and oxygen. At 580 °C, the reaction is complete 2 Pb 3 O 4 → 6 PbO + O 2

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