For a first order gaseous decomposition, the half-life is 240 s at an initial pressure of 500 torr and also 240 
at 250 torr. Which statement best describes the relationship between half-life 
and initial pressure 
?
A
B
C
D
is independent of 
Text Solution
Verified by ExpertsThe correct answer is:
D
For a first-order reaction, 
, so the half-life does not depend on the initial concentration/pressure-hence the same 240 s at 500 and 250 torr.
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