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AP EAMCET201822 Apr 2018Morning ShiftChemistryChemical KineticsActual

Thermal decomposition of HCOOH is a first order reaction and the rate constant at T(K) is 4.606 10⁻³ ~s ⁻¹ . The time required to decompose 90 % of initial quantity of HCOOH at T( ~K ) in second is

Options

  1. A100
  2. B500
  3. C1000
  4. D50

Correct answer

B. 500

Step-by-step solution

First order reaction aligned & K= 2.303 t A₀ A & Given, K=4.606 10⁻³ ~s ⁻¹ & A=90 %, A₀= Initial quantity =100 % & t= 2.303 4.606 10⁻³ 1 1-9 & t=500 ~s aligned

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