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NTA Abhyas NEET2020ChemistryChemical KineticsPractice

An organic compound undergoes first order decomposition. The time taken for its decomposition to 1 / 8 and 1 / 10 of its initial concentration are t 1 / 8 and t 1 / 10 respectively. What is the value of [ t 1 / 8 ] t 1 / 10 ? (take l o g 10 2 = 0.3 )

Options

  1. A0.6
  2. B3
  3. C0.9
  4. D9

Correct answer

C. 0.9

Step-by-step solution

As we know k t = l n A 0 A t t 1 / 8 t 1 / 10 = l n 8 l n 10 = 0.9 t 1 / 8 t 1 / 10 = 0.9

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