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For a reaction A + 2 B → 2 C , the following data were obtained. Initial concentration [ A ] [ B ] Rate ( m o l l - 1 m i n - 1 ) i . 1.0 1.0 0.15 i i . 2.0 1.0 0.30 i i i . 3.0 1.0 0.45 i v . 1.0 2.0 0.15 v . 1.0 3.0 0.15 The rate law for this reaction

Options

  1. AR = k [ A ] [ B ] 0
  2. BR = k [ A ] [ B ] 2
  3. CR = k [ A ] [ B ]
  4. DR = k [ A ] 2 [ B ]

Correct answer

A. R = k [ A ] [ B ] 0

Step-by-step solution

For A from is i and ii R 2 R 1 = c 2 c 1 n or 0.30 0.15 = 2 1 n So n = 1 For B, from i and iv R 2 R 1 = c 2 c 1 n or 0.15 0.15 = 2 1 n or ( 2 ) ° = ( 2 ) n So n = 0 R = k [ A ] [ B ] 0

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