At 1000 K , a sample of pure `NO_(2)` gases decomposes as : `2NO_(2)(g)hArr2NO(g)+O_(2)(g)` The equilibrium constant `K_(P)` is 156.25 atm .Analysis showns that the partial pressure of `O_(2)` is 0.25 atm at equilibrium .The parital pressure o f`NO_(2)` at equilibrium is :
A
`0.01`
B
`0.02`
C
`0.04`
D
none of these
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b
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