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JEE Main
Exam
JEE Main
Subject
Chemistry
Chapter
p Block Elements (Group 13 & 14)

JEE Main · Chemistry · p Block Elements (Group 13 & 14)

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

What are xx and yy in the following reaction?

xPb3O4→yPbO+O2x{Pb}_{3}{O}_{4} \to yPbO + {O}_{2}

Options

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

Correct answer

D. x=2,y=6x = 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 Pb3O4. 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

Pb3O4{Pb}_{3}{O}_{4}~consists of PbO and PbO2

Oxidation state of Pb in~PbO~is +2

and in PbO2& is +4

When heated to 500 °C, it decomposes to lead(II) oxide and oxygen. At 580 °C, the reaction is complete

2Pb3O4→6PbO+O22{Pb}_{3}{O}_{4} \to 6PbO + {O}_{2}

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