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Question

At 500 K, the half-life period of a gaseous reaction at an initial pressure of 80 kPa is 350 s. When the pressure is 40 kPa, the half-life period is 175 s. The order of the reaction is:
  1. two
  2. zero
  3. three
  4. one

A
zero
B
one
C
three
D
two
Solution
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P1=80kPa,(t1/2)1=350s

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