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Manipal MET2024ChemistryChemical Kinetics

For a first order reaction, time required for 99 % completion of a reaction is x times the time required for completion of 90 % . The value of x is .......

Correct answer

2

Step-by-step solution

aligned t_ 99 % & = 2.303 k (a) a-0.99 a & = 2.303 k 10^2 2 2.303 k ...(i) t_ 90 % & = 2.303 k a a-0.90 a & = 2.303 k 10= 2.303 k ...(ii) aligned Take the ratio of (i) and (ii) aligned & t_ 99 % t_ 90 % =2 & t_ 99 % =2 t_ 90 % aligned Hence, 2 times is the final answer.

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