Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasysingle choice

Half life of a First order reaction is 45 minutes. How long does it need to complete 99.9% of the reaction?

Options:

Answer:

Solution:

$k = \frac{0.693}{45} mi n^{- 1} = \frac{2.303}{t_{99.9%}} log \frac{a}{a - 0.999 a}$

or $t_{99.9%} = \frac{2.303 \times 45}{0.693} log1 0^{3} = 448 min \approx 7.5 h r s$

Stream:NTA_ABHYASSubject:ChemistryTopic:Chemical KineticsSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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