Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasysingle choice

Four thousand active nuclei of a radioactive material are present at $t = 0.$ After $60$ minutes $500$ active nuclei are left in the sample. The decay constant of the sample is

Options:

Answer:

Solution:

60 minutes = 3 half lives

$∴ T_{\frac{1}{2}} = 20 m i n$

$∴ λ = \frac{\ln 2}{t_{1 / 2}} = \frac{\ln 2}{20} p e r m i n$

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

⏱ 2mℹ️ Source: PYQ_2020

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