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A(g) overset (triangle) to P(q)+Q(g)+R(g...

`A(g) overset (triangle) to P(q)+Q(g)+R(g),` follows first order kinetics with a half life of 69.3 s at `500^@C`. Starting from the gas ‘A’ enclosed in a container at `500^@C` and at a pressure of 0.4 atm, the total pressure of the system after 230 s will be

A

1.15 atm

B

1.32 atm

C

1.22 atm

D

1.12 atm

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D
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