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NTA Abhyas NEET2020ChemistryChemical KineticsPractice

The rate constant of a reaction is 1.5 × 1 0 - 4 s - 1 at 27 ° C and 3 × 1 0 - 4 s - 1 at 127 ° C . The E a is

Options

  1. A1.663 × 10 3 C a l
  2. B3.326 × 1 0 3 c a l
  3. C8.314 × 1 0 3 c a l
  4. D2.255 × 1 0 3 c a l

Correct answer

A. 1.663 × 10 3 C a l

Step-by-step solution

l o g 2 × 10 4 1.5 × 10 4 = ℇ A 2 × 2.303 1 300 - 1 400 l o g 2 = ℇ A 2.303 × 2 100 400 × 300 ℇ A = 0.3010 × 2.303 × 2 × 1200 = 1663.68 C a l = 1.663 × 10 3 C a l

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