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At 27^{\circ} \mathrm{C}, the half -life of a sample of a gaseous compound initially at 1 bar is 50 \mathrm{sec}. When the pressure is 0.5 bar, the half -life is 25 \mathrm{sec} The order of the \mathrm{r x^n} is =?

 

Option: 1

0


Option: 2

1


Option: 3

2


Option: 4

3


Answers (1)

best_answer

\because  Given information shows, t_{1 / 2} \propto \beta_{\text {gas }}

As for zero order \mathrm {t_{1 / 2}=\frac{C_0}{2 k} } 

for first order \mathrm { t_{1 / 2}=\frac{0.693}{k}}

Posted by

Ritika Kankaria

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