JEE Mains · Chemistry · STD 12 - 3. Chemical kinetics
Gaseous cyclobutene isomerizes to butadiene in a first order process which has a \('k'\) value of \(3.3 \times 10^{-4} s ^{-1}\) at \(153^{\circ} C\). The time in minutes it takes for the isomerization to proceed \(40 \%\) to completion at this temperature is .......... (Rounded off to the nearest integer)
- A \(10\)
- B \(20\)
- C \(26\)
- D \(30\)
Answer & Solution
Correct Answer
(C) \(26\)
Step-by-step Solution
Detailed explanation
\(Kt =\ell n \frac{[ A ]_{0}}{[ A ]_{ t }}\) \(3.3 \times 10^{-4} \times t =\ell n \left(\frac{100}{60}\right)\) \(t =1547.956\, sec\) \(t =25.799\, min\) \(26\, min\)
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