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  • At 300 K, the half life for the decomposition of a sample of a gaseous compound initially at 50.4 KPa was 380 s. When pressure was 25.2 KPa, the half lite was found to be 190 s. The order of t

At 300 K, the half life for the decomposition of a sample of a gaseous compound initially at 50.4 KPa was 380 s. When pressure was 25.2 KPa, the half lite was found to be 190 s. The order of the reaction

Option: 1

1


Option: 2

0


Option: 3

2


Option: 4

0.5


Answers (1)

best_answer

\mathrm{\begin{aligned} \frac{\left(t_{1 / 2}\right)_1}{\left(t_{1 / 2}\right)_2} & =\left(\frac{p_1}{p_2}\right)^{1-n} \\ \left(\frac{380}{190}\right) & =\left(\frac{50.4}{25.2}\right)^{1-n} \\ (2)^1 & =(2)^{1-n} \\ 1 & =1-n \\ n & =0 \end{aligned}}

for zero order reaction half life is direct proportional to the initial concentration

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