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Half life time for first order reaction ...

Half life time for first order reaction is 25 minutes . What time will be required for 99% completion of reaction ?

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To solve the problem of determining the time required for 99% completion of a first-order reaction given its half-life of 25 minutes, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Concept of Half-Life**: The half-life (t₁/₂) of a first-order reaction is the time required for the concentration of the reactant to decrease to half of its initial value. For a first-order reaction, the half-life is given by the formula: \[ t_{1/2} = \frac{0.693}{k} ...
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AAKASH INSTITUTE ENGLISH-CHEMICAL KINETICS-ASSIGNMENT (SECTION D : Assertion - Reason Type Questions)
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  5. A : The rate constant of first order reaction is used to calculate pop...

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  6. A : A positive catalyst increases the rate of reaction . R : A posit...

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  7. A : The molecularity of reaction can never be fractional. R : Molecu...

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  9. Assertion : Complex reaction takes place in different steps and the sl...

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  10. A : Rate constant increases with temperature. R : Rate of exothermic...

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  11. A : Hydrolysis of ester in acidic medium follows first order kinetics....

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  13. A : For exothermic reaction, DeltaH=Ea (forward) -Ea (backward) R ...

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  14. A : Arrhenius parameter (A) = P (steric factor) xx z (collision freq...

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  15. A : In presence of +ve catalyst, activation energy & threshold energy ...

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  16. A : when temperature becomes oo then the value of rate constant is max...

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