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JEE Main20202 Sep 2020Evening ShiftChemistryChemical KineticsActual

The results given in the below table were obtained during kinetic studies of the following reaction: 2 A + B → C + D Experiment A / molL - 1 B / molL - 1 Initial rate/ molL - 1 min - 1 I 0 . 1 0 . 1 6 . 00 × 10 - 3 II 0 . 1 0 . 2 2 . 40 × 10 - 2 III 0 . 2 0 . 1 1 . 20 × 10 - 2 IV X 0 . 2 7 . 20 × 10 - 2 V 0 . 3 Y 2 . 88 × 10 - 1 X and Y in the given table are respectively :

Options

  1. A  0 . 4 ,   0 . 4
  2. B0 . 4 ,   0 . 3
  3. C  0 . 3 ,   0 . 4
  4. D  0 . 3 ,   0 . 3

Correct answer

C.   0 . 3 ,   0 . 4

Step-by-step solution

Rate = k [ A ] a [ B ] b from Exp 1   &   2    b = 2 from Exp 1   &   3    a = 1 from Exp   2   &   4 ⇒ 3 = x 0 . 1 1    so x = 0 . 3 from Exp 1   &   5 ⇒    48 = 3 1 y 0 . 1 2 4 2 = y 0 . 1 2     so  y = 0 . 4

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