A `10 L` flask at `298 K` contains a gaseous mixture of `CO` and `CO_(2)` at a total pressure of `2.0 "bar"` if `0.20 ` mole of `CO` is present, find its partial pressure and also that of `CO_(2)`.

Answer

`p_(CO) = 0.495 "bar", p_(CO_(2)) = 1.505 "bar"`

Explanation

Partial pressure of `CO (pCO) = ((.^(n)CO)RT)/(V) = ((0.2 mol) xx (0.083 L "bar" K^(-1) mol^(-1)) xx (298 K))/((10 L)) = 0.495 "bar"`
Partial pressure of `CO_(2) (pCO) = P - pCO = 2 - 0.495 = 1.505 "bar"`.