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Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsSecond & nth Order ReactionsEasy2 minPYQ_2022

ChemistryEasysingle choice

What is value of rate constant of a first order reaction if slope of graph between $lo g_{10} \frac{[ A ] _{0}}{[ A ] _{t}}$ (y axis) and time (x axis) is $1 \times 1 0^{- 3}$ ?

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Answer:

Solution:

$In [A_{t}] = In [A_{O}] - K t In \frac{[ A _{0} ]}{[ A _{t} ]} = K t lo g_{10} \frac{[ A _{1} ]}{[ A _{t} ]} = \frac{K}{2.303} . t = \frac{K}{2.303} = 1 \times 1 0^{- 3} K = 2.303 \times 1 0^{- 3}$

Stream:MHT_CETSubject:ChemistryTopic:Chemical KineticsSubtopic:Second & nth Order Reactions

⏱ 2mℹ️ Source: PYQ_2022

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