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If a substance with half life 3 days is ...

If a substance with half life `3` days is taken at other place in `12` days. What amount of substance is left now, if it follows first order kinetics

A

`(1)/(32)`

B

`(1)/(8)`

C

`(1)/(16)`

D

`(1)/(4)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-CHEMICAL KINETICS-Objective Exercise - 1
  1. A reaction involves two reactants. The rate of reaction is directly pr...

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  2. In the reaction 2A+Bto Products the order w.r.t A is found toi be 1 an...

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  3. What are the units of the rate constant of a reaction in which the hal...

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  4. Which of the following represents the expression for 3/4 th life of 1s...

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  5. Give relation between half reaction time (t(1//2)) and initial concent...

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  6. Which of the following statements for the order of a reaction is incor...

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  7. If a is the initial concentration of the reactant, the time taken for ...

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  8. The slowest step of a particular reaction is found to be 1/2X(2)+Y(2)t...

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  9. For the reaction AtoB, the rate law expression is : rate = K[A]. Which...

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  10. Which of the following is correct for a first order reaction? (K=rate ...

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  11. If a substance with half life 3 days is taken at other place in 12 day...

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  12. Which one is not correct ?

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  13. The half life periods of four reactions labelled by A,B, C & D are 30 ...

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  14. In the case of a first order reaction, the ratio of the time required ...

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  15. Which of the following is correct ?

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  16. If the rate for the chemical reaction is expresssed at Rate =K[A][B]" ...

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  17. If the rate of gaseous reaction is independent of pressure, the order ...

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  18. The half life of a 1^(st) order reaction is 1 min 40 seconds. Calculat...

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  19. The value of rate constant of a pseudo first order reaction

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  20. The ratio of any colligative property for KCl solution to that of suga...

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