Nitric oxide (NO) reacts with molecular oxygen as follows:
`2NO(g)+O_(2)(g) rarr 2NO_(2)(g)`
Initially NO and `O_(2)` are separated as shown below. When the valve is opened the reaction quickly goes to completion Assume that the temperature remains constant at `27^(@)` C [`R=0.08 atm lit//mol//K]`

Number of moles of `NO_(2)` after reaction in 4 L container is:

Options

A. `1/24`
B. `1/18`
C. `1/22`
D. `1/12`

Answer

b