AP EAMCET · Chemistry · Chemical Kinetics
\(20 \%\) of a first order reaction was found to be completed at \(10: 00 \mathrm{a} . \mathrm{m}\) at \(11.30 \mathrm{a} . \mathrm{m}\). on the same day, \(20 \%\) of the reaction was found to be remaining. The half life period in minutes of the reaction is
- A 90
- B 45
- C 60
- D 30
Answer & Solution
Correct Answer
(B) 45
Step-by-step Solution
Detailed explanation
For \(t=90 \mathrm{~min}\) (from 10 a.m. to \(11: 30\) a.m.) As \(20 \%\) was already completed \(\therefore a=80\)…
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