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An equilibrium mixture in a vessel of capacity 100 litre contain 1 mol N 2 , 2 mol O 2 and 3 mol NO . Find number of moles of O 2 to be added, so that at new equilibrium the concentration of NO is 0 .04 mol/lit . .

Options

  1. A101 18
  2. B101 9
  3. C202 9
  4. DNone of these

Correct answer

A. 101 18

Step-by-step solution

N 2 + O 2 ⇌ 2 N O K = 3 2 2 × 1 …(i) N 2 1 - z + O 2 2 + y - z ⇌ 2 N O 2 z + 3 K = ( 3 + 2 z ) 2 ( 2 + y - z ) ( 1 - z ) …(ii) Given, 3 + 2 z = 4 z = 1 2 (i) = (ii) y = 101 18

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