When `NO` and `NO_(2)` are mixed, the following equilibria are readily obtained,
`2NO_(2) hArr N_(2)O_(4), K_(p)=6.8 atm^(-1)`
`NO+NO_(2) hArr N_(2)O_(3)`
In an experiment when `NO` and `NO_(2)` are mixed in the ratio of `1:2`, the final total pressure was `5.05` atm and the partial pressure of `N_(2)O_(4)` was `1.7` atm. Calculate
a. the equilibrium partial pressure of `NO`.
b. `K_(p)` for `NO+NO_(2) hArr N_(2)O_(3)`.
