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Q.

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]

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Detailed Solution

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t1/2×1P0n−1t1t2=P2n−1P1n−1340170=27.855.5n−1⇒2=1(2)n−1n=0

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