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The half life of a substance in a certai...

The half life of a substance in a certain enzymecatalysed reaction is 138 s. The time required for the concentration of the substance to fall from
`1.28 mg L^(-1) " to " 0.04 mg L^(-1)`, is -

A

690 s

B

276 s

C

414 s

D

552 s

Text Solution

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The correct Answer is:
A
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AAKASH INSTITUTE ENGLISH-CHEMICAL KINETICS-ASSIGNMENT (SECTION C : Previous Year Questions)
  1. which one of the following statements for the order of a reacti...

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  2. The unit of rate constant for a first order reaction

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  3. The half life of a substance in a certain enzymecatalysed reaction is ...

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  4. for the reaction N(2)O(5)(g) to 2NO(2)(g)+(1)/(2)O(2)(g) the valu...

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  5. for an endothermic reaction , energy of activation is E(alpha) an...

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  6. During the kinetic study of the reaction, 2A +B rarrC+D , following re...

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  7. The rate of the reaction 2NO+Cl(2)rarr 2NOCl is given by the rate ...

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  8. For the reaction , N2+3H2rarr2NH3 if (d[NH3])/(dt)=2xx10^(-4)"mol L"^(...

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  9. in the reaction , BrO(3)^(-)(aq)+5Br^(-)(aq)+6H^(+)to 3Br(2)(l)+3H...

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  10. Half life period of a first - order reaction is 1396 seconds. The spec...

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  11. for the reaction ,A+ B to products , it is observed that I. On do...

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  12. the rate constants k(1) and k(2) for two different reactions ar...

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  13. The bromination of acetone that occurs in acid solution is represented...

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  14. In a first-order reaction A→B, if k is rate constant and initial conce...

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  15. the reaction of hydrogen and iodine monochloride is given as H...

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  16. If 60% of a first order reaction was completed in 60 minutes, 50% of t...

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  17. For the reaction, 2A + B rarr 3C + D, which of the following does not ...

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  18. For the reaction N(2) to 3H(2) to 2NH(3), how are the rate of reaction...

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  19. For a first-order reaction A rarr B the reaction rate at reactant conc...

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  20. A nuclide of an alkaine earth metal undergoes radioactive deacy by em...

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