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The reaction 2SO 2 g +O 2 g ⇌ 2SO 3 g is carried out in a 1 d m 3 vessel and 2 d m 3 vessel separately. The ratio of the reaction velocities will be

Options

  1. A1:8
  2. B1:4
  3. C4:1
  4. D8:1

Correct answer

D. 8:1

Step-by-step solution

2 S O 2 g + O 2 ( g ) ⇌ 2 S O 3 ( g ) For this reaction, rate r 1 = k [ S O 2 ] 2 [ O 2 ] On doubling the volume of vessel, concentration would be half. Hence, Rate r 2 = k S O 2 2 2 O 2 2 = r 1 8 r 1 r 2 = 8 : 1

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