At 345   K , the half life for the decomposition of a sample of a gaseous compound initially at 55 . 5…

At 345 K, the half life for the decomposition of a sample of a gaseous compound initially at 55.5 kPa was 340 s. When the pressure was 27.8 kPa, the half life was found to be 170 s. The order of the reaction is - [integer answer]

Solution

t1/21t1/22=P1P21-n

⇒340170=55.527.81-n

21=21-n

1=1-n⇒n=0

For zero order reaction half life is directly proportional to the initial concentration.

Asked in: JEE Main 2022 (25 Jun Shift 2)

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