Gaseous cyclobutene isomerizes to butadiene in a first order process which has 'k' value of 3.3 * 10^-4 s^-1 at 153°C. The time in minutes it takes for the isomerization to proceed 40% to completion at this temperature is______ (Rounded off the nearest integer)

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Vishal Baghel | Contributor-Level 10

4 months ago

K = 3.3 * 10^-4 s^-1

Time for 40% completion ; t

Using $K = \frac{2.303}{t} l o g_{10} \frac{{[R]}_{0}}{[R]}$

3.3 * 10^-4 = $\frac{2.303}{t} l o g_{10} \frac{{[R]}_{0}}{0.6 {[R]}_{0}}$

$t = \frac{2.303}{3.3} * 1 0^{4} * 0.22 \Rightarrow t = 25.58 m i n s$

so; the nearest integer is 26.

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Gaseous cyclobutene isomerizes to butadiene in a first order process which has 'k' value of 3.3 * 10-4 s-1 at 153°C. The time in minutes it takes for the isomerization to proceed 40% to completion at this temperature is______ (Rounded off the nearest integer)

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