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At 300 k the half‐life a sample of a gaseous compound initially at 1 atm is 100 sec. When the pressure is 0.5 atm the half‐life is 50 sec. The order of reaction is

Correct answer

0

Step-by-step solution

For a zero order reaciton, t 1/2 ∝ initial concentration ⇒ t 1/2 ∝ pressure Since, half life decreases to half with similar decrease in pressure. Hence, the order of reaction is zero.

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