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NEET2018ChemistryChemical EquilibriumActual

A chemical reaction was carried out at 300 K and 280 K . The rate constant were found to be k ₁ and k ₂ respectively, then

Options

  1. Ak₂=4 k₁
  2. Bk₂=0.25 k₁
  3. Ck₂=2 k ₁
  4. Dk₂=0.5 k ₁

Correct answer

B. k₂=0.25 k₁

Step-by-step solution

For every 10^ C rise, rate constant gets doubled. Hence, for every 20^ C rise, rate constant will be 4 times. Therefore, according to the given statement, Temperature 280 ~K 300 ~K Rate constant k ₂ k ₁ (4 k ₂ ) Thus, k ₁=4 k ₂ k ₂=0.25 k ₁

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