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A substance undergoes a first order deco...

A substance undergoes a first order decomposition. The decomposition follows two parallel first order reactions as

The percentage distribution of `B` and `C` are

A

`80%` B and `20%` C

B

`75%` B and `25%` C

C

`90%` B and `10%` C

D

`60%` B and `40%` C

Text Solution

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The correct Answer is:
B
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FIITJEE-CHEMICAL KINETICS AND RADIOACTIVITY-Assignment problems (Objective) Level-I
  1. If a reaction with t(1//2)=69.3 sec, has a rate constant 10^(-2)sec^(-...

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  2. The specific rate constant for a first order reaction is 60xx10^(-4) s...

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  3. The rate constant for a zero order reaction is 2xx10^(-2) mol L^(-1)se...

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  4. A first order reaction is carried out with an initial concentration of...

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  5. What fraction of a rectant showing first order remains after 40min, if...

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  6. A substance undergoes a first order decomposition. The decomposition f...

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  7. A tangent drawn on the curve obtained by plotting concentration of pro...

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  8. For reaction , 3A to products, it is found that the rate of reaction ...

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  9. The thermal decomposition of acetaldehyde , CH(3)CHO to CH(4)+CO, has ...

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  10. The reaction , 2O(3) to 3O(2) , is assigned the following mechanism. ...

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  11. For an endothermic reaction where DeltaH represents the enthalpy of th...

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  12. The rate expression for a reaction is rate =k[A]^(3//2)[B]^(-1), the o...

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  13. The reaction, A(g)+2B(g) to C(g)+D(g) is an elementary process. In an ...

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  14. If concentration are measured in moles/lit and time in minutes, the un...

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  15. A radioactive element has a half-life period of 140 days . How much of...

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  16. For a first order reaction, the plot of log[A](t)vs t is linear with a

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  17. For a hypothetical reaction, A+B to C+D, the rate =k[A]^(-1//2)[B]^(3/...

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  18. In a reaction the threshold energy is equal to

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  19. For a first reaction, t(0.75) is 138.6 seconds. Its specific rate cons...

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  20. At the given point of intersection of the two curves shown concentrati...

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