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The decomposition of a gaseous substance...

The decomposition of a gaseous substance (A) to yield gaseous products (B), (C) follows First order kinetics. If initially only (A) is present and 10 minutes after the start of the reaction the pressure of (A) is 200 mm Hg and that of overall mixture is 300 mm Hg, then rate constant for `2ArarrB+3C` is :

A

`(1//600)" In "1.25" sec"^(-1)`

B

`(2.303//10)" log 1.5 min"^(-1)`

C

`(1//10)" In 1.25 sec"^(-1)`

D

None of these

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A
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