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For the reaction, 2 S O 2 + O 2 ⇌ 2 S O 3 , the rate of disappearance of O 2 is 2 × 1 0 - 4 m o l L - 1 s - 1 . The rate of appearance of S O 3 is

Options

  1. A2 × 1 0 - 4 m o l L - 1 s - 1
  2. B4 × 1 0 - 4 m o l L - 1 s - 1
  3. C1 × 1 0 - 1 m o l L - 1 s - 1
  4. D6 × 1 0 - 4 m o l L - 1 s - 1

Correct answer

B. 4 × 1 0 - 4 m o l L - 1 s - 1

Step-by-step solution

2 S O 2 + O 2 ⇌ 2 S O 3 Rate of reaction = - 1 2 d [ S O 2 ] d t = - d [ O 2 ] d t = 1 2 d [ S O 3 ] d t 2 × 1 0 - 4 = 1 2 d [ S O 3 ] d t d [ S O 3 ] d t = 2 × 2 × 1 0 - 4 = 4 × 1 0 - 4 m o l L - 1 s - 1

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