1.

In the reaction \[2{{N}_{2}}{{O}_{5}}\to 4N{{O}_{2}}+{{O}_{2}}\], initial pressure is \[500\,atm\] and rate constant \[K\] is \[3.38\times {{10}^{-5}}{{\sec }^{-1}}\]. After 10 minutes the final pressure of \[{{N}_{2}}{{O}_{5}}\] is               [Orissa JEE 2005]

A.                 490 atm               
B.                 250 atm
C.                 480 atm               
D.                 420 atm
Answer» B.                 250 atm


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