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COMEDK2016ChemistryChemical Kinetics

The reaction, 2 SO ₂(g)+ O ₂(g) 2 SO ₃(g) is carried out in a 1 dm ³ vessel and 2 dm ³ vessel separately. The ratio of the reaction velocities will be

Options

  1. A4: 1
  2. B8: 1
  3. C1: 8
  4. D1: 4

Correct answer

B. 8: 1

Step-by-step solution

The rate law expression is, r=k [ SO ₂ ]² [ O ₂ ] As, volume increase 2 times, concentration reduces by 1 2 times i.e., [ SO ₂ ]₁= [2 SO ₂ ] and [ O ₂ ]₁= [2 O ₂ ] array ll New rate, & r₁=k [2 SO ₂ ]² [2 O ₂ ] & r₁=8 r & r₁ r = 8 1 array

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